Best Mjr Tumblers Kids Rock Tumblers in 2026

Daisy
Last Updated: Jan 22, 2026

At a Glance: Our Top Picks for Mjr Tumblers Kids Rock Tumblers

NATIONAL GEOGRAPHIC Rock Tumbler Grit - Polishing Grit Media, Polish Up to 20 lbs. of Rocks, Works with any Rock Tumbler/Polisher, Stone Polisher
#TOP1
National Geographic Rock Tumbler Grit - Polishing Grit
9.9
PM SCORE
Polly Plastics Rock Tumbler Tumbling Media Grit Kit & Plastic Filler Pellets
#TOP2
Polly Plastics Rock Tumbler Tumbling Media Grit Kit
9.8
PM SCORE
Dan&Darci Rock Tumbler Grit Refill Kit - 3.5 Pounds Grits Media + Poly Plastic Pellets - Rocks Polishing Refills for Any Brand Rock Tumblers - Rock Polish Tumbling Supplies Set - Stone Polisher
#TOP3
Dan&Darci Rock Tumbler Grit Refill Kit - 3.5
9.8
PM SCORE

* PickSmartly editors independently research, review, and endorse the top products through comprehensive data analysis. We may earn a commission for qualifying purchases made through our product links.

Summary of the Best Mjr Tumblers Kids Rock Tumblers of 2026

Market Overview
Mjr Tumblers Kids Rock Tumblers Reviewed
  • Reviews Analyzed: 43680 Items
  • PM Avg. Rating: 6.7 / 10
84 Products Evaluated
  • Highest Price: $345.99
  • Lowest Price: $9.99
  • Avg. Price: $54.71

National Geographic Rock Tumbler Grit - Polishing Grit Media, Polish Up To 20 Lbs. Of Rocks, Works With Any Rock Tumbler/Polisher, Stone Polisher

NATIONAL GEOGRAPHIC
NGBULKGRIT
5.30 X 4.20 X 5.30 Inches
3.00 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

HIGH QUALITY - This rock polisher grit refill pack comes with enough high-quality silicon carbide grit to put a dazzling polish on up to 20 lbs. of rocks, gems, glass, and more

EASY TO USE FOUR-STAGE ROCK GRIT - The first rock tumbling grit stage provides initial shaping, the second smooths rock surfaces, the third pre-polishes rocks, and the fourth provides the final polish

COMPATIBLE WITH ALL TUMBLERS - This complete 4-step rock tumbler grit refill kit works with all rock tumblers. For best results, use with National Geographic Rock Tumblers and rock tumbling supplies

EASY TO MEASURE AND STORE - Each rock tumbling grit stage is packaged in a wide-mouth container with secure, screw-top closure.

HIGH-QUALITY EDUCATIONAL TOYS - National Geographic is proud to make the highest quality hands-on science toys, and all our products are backed by exceptional service. If your experience is anything less than extraordinary, let us know so we can make it right for you!

Polly Plastics Rock Tumbler Tumbling Media Grit Kit & Plastic Filler Pellets

POLLY PLASTICS
683405247067
10.00 X 6.50 X 4.50 Inches
4.20 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Hidden Treasure Shop 9.90

Features

COMPLETE KIT - 4 Step grit pack and plastic filler for use in 15 lb. tumbler or five 3 lb. tumbles.

CONTAINS - 1 lb. 60/90 Coarse Silicon Carbide Grit, 1 lb. 180/220 Medium Silicon Carbide, Grit, ½ lb. 500 Fine Silicon Carbide, ½ lb. 1200 Aluminum Oxide Polish and 1 lb. of premium high-impact polypropylene plastic filler pellets. Protect and cushion fragile stones and reduce tumbling noise.

GRIT SOLD BY WEIGHT NEEDED FOR EACH STEP – Steps 1 & 2 are 1 lb. each and Steps 3 & 4 are ½ lb. each but all are sold in the same size jars for packaging consistency. The different weights, along with different densities, will mean that jars will not have equal amounts of fullness.

PREMIUM POLISHING MATERIALS, COMPATIBLE WITH ALL BRAND TUMBLERS - Proven to produce a beautiful polish. Made in the USA.

BEGINNER FRIENDLY - Complete, easy-to-follow instructions included. 100% satisfaction guarantee on all our products.

Dan&Darci Rock Tumbler Grit Refill Kit - 3.5 Pounds Grits Media + Poly Plastic Pellets - Rocks Polishing Refills For Any Brand Rock Tumblers - Rock Polish Tumbling Supplies Set - Stone Polisher

DAN&DARCI
DD-011
10.32 X 5.55 X 1.89 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Surreal Brands 9.93

Features

Complete rock tumbling medium kit: 3.5 lbs. 4-step grit set and poly plastic pellets, to polish any rock. Packaged in easy-to-use-and-store bottles

Includes: Step #1 Coarse Grit (1 lb.), Step #2 Medium Grit (1 lb.), Step #3 Pre-polish Grit (1/2 lb.), Step #4 Grit (1/2 lb), Polypropylene Plastic Poly Filler Pellets (1/2 lb.), Instruction Guide

Compatible with all rock tumblers: Can be used in tumblers from any brand: Dan&Darci, Elenco, Lortone, National Geographic, Smithsonian, Thumler and more

Easy to use: Includes a clear instruction guide on how to use the grits and plastic pellets.

100% satisfaction guaranteed: Love it, or your money back!  If you are not satisfied with the kit, we'll refund you 100% of the money, no questions asked.

Rock Tumbler Refill Grit Media Kit, Stone Polisher (3.5 Pounds Polishing Grits + Poly Plastic Pellets), Compatible With Any Brand Tumbler, 5-Steps For Tumbling Stones

BRAVE FINDER
LE
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
MEET TOY 9.86

Features

[5 STEPS] Just measure in the grit, add enough water to cover the stones, seal the barrel, and tumble. The only variable is how much of the product to use in your rock tumbler. We suggest 2 tbsp of grit per pound of stones, which is a good rule of thumb.

[COMPLETE KIT] 5 Step grit pack and ceramic filler for use in 15 lb. tumbler or five 3 lb. tumbles. Coarse Grit, Medium Grit, Pre-polish Grit, Grit, Polypropylene Plastic Poly Filler Pellets and Instruction Guide.

[EASY TO USE] Includes a clear instruction guide on how to use the grits and plastic pellets.Large Amount of Grit, This is a large amount of each size grit for the price.

[COMPATIBLE WITH ANY BRAND TUMBLER] Tumbler-Polishing-Grit-Refill-Kit-for Polishing Agate-Jasper-Sea Glass- Gemstones Turquoise Sun Stones Obsidian Quartz Crystals Healing Stones. Each to have pretty rocks/gems.

[Win-win] Brave Finder respect and put buyers' needs first. We're always here to help if any quality issues and about the rock tumbler grit kit.

[PACKAGE CONTENTS] 1 Pound, Step #1 Coarse Grit; 1 Pound, Step #2 Medium Grit; 0.5 Pounds, Step #3 Pre-Polish; 0.5 Pounds, Step #4 Final Polish. Includes 3.5 Pounds of Polishing Grit + Poly Plastic Pellets. Tips: The different weights and densities, will mean that jars will not have equal amounts of fullness.

Large 2.5Lb Professional Rock Tumbler Kit, 3-Speed Motor & 9-Day Timer, 100% Rubber Barrel, Quiet Rotary Stone Polisher With 5 Belts, Rough Gemstones, 4 Polishing Grits, Stem Gift For Adults Kids

KOOLSTONE
KS20220422
10.99 X 9.00 X 5.00 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
KoolStone--2 Years Replacement Warranty 9.47

Features

Belts are consumables, so we'd like to offer extra 5 belts for spare use. 𝐏𝐥𝐞𝐚𝐬𝐞 𝐚𝐝𝐝 𝐭𝐡𝐢𝐬 𝐥𝐢𝐬𝐭𝐢𝐧𝐠 𝐭𝐨 𝐲𝐨𝐮𝐫 𝐰𝐢𝐬𝐡 𝐥𝐢𝐬𝐭 𝐚𝐧𝐝 𝐭𝐡𝐞𝐧 𝐫𝐞𝐚𝐜𝐡 𝐨𝐮𝐭 𝐚𝐭: 𝐬𝐮𝐩𝐩𝐨𝐫𝐭@𝐢𝐤𝐨𝐨𝐥𝐬𝐭𝐨𝐧𝐞.𝐜𝐨𝐦 𝐭𝐨 𝐠𝐞𝐭 𝐭𝐡𝐞 𝐟𝐫𝐞𝐞 𝐛𝐞𝐥𝐭𝐬 (𝐰𝐨𝐫𝐭𝐡 𝟏𝟐𝐔𝐒𝐃).

2 Years Warranty - Special Bonus Just for You! The warranty covers accessories replacement, techical support, 𝟐𝟒/𝟕 𝐜𝐥𝐚𝐢𝐦 𝐡𝐨𝐭𝐥𝐢𝐧𝐞 and so on. 𝐌𝐚𝐤𝐞 𝐲𝐨𝐮𝐫 𝐦𝐨𝐧𝐞𝐲 𝐰𝐨𝐫𝐭𝐡 𝐞𝐯𝐞𝐫𝐲 𝐩𝐞𝐧𝐧𝐲.

START A TUMBLING JOURNEY -- Koolstone Rock Tumbler turn rough rocks into polished gems, then you will be very excited to see the stones change with each cycle. That's a fun process of rock tumbling and a family little project for parent-child endeavor.

2.5LB LARGE CAPACITY & 75% QUIETER -- An updated features is that KoolStone Rock Tumbler has a large 2.5LB capacity. Which allows to tumbler more rocks each time. Another improvement is the quieter barrel. Rubber material which has 75% quieter than most plastic barrel.

FASTER POLISHING TIME & BETTER POLISHING RESULTS -- 3-speed controls (providing more granular tumbling results), a 9-day timer (with automatic shutoff feature and memory function), all displayed on clear screen, letting you easily hone your settings for precise tumbling each time.

EVERYTHING YOU NEED FOR TUMBLING IS HERE -- KoolStone Rock Tumbler has everything you need to create polished gemstones. Rock tumbler, 2.5LB capacity rubber barrel, 1LB for 9 different types of rough gemstones, 5 belts and 4 polishing grits and ceramic contact media, sifter, jewelry fastenings, and illustrated tutorial guide. Just tumbling right away!

90 DAYS REFUND GUARANTEE & 2 YEARS FREE REPLACEMENT -- The stardard 30-day return time is always short, so we purposely extend it to 90 days. If you miss Amazon's 30-day return window, please do not get angry or mat at us and feel free to contact us directly for an easy refund or replacement within 48 hours.

Plastic Pellets Rock Tumbling Media (3 Lbs) For Rock Tumbler, Stone Tumbler, Rock Polisher, Filler Beads, Rock Tumbler Supplies In Heavy Duty Resealable Bag

ROLY POLY
45453LB
12.00 X 8.00 X 2.00 Inches
3.00 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Deal Raiders 7.33

Features

Premium Rock Tumbling Media

Protects & Cushions Stones

Improves Tumbling Action

Balances Loads & Reduces Noise

They Float for Easy Skimming & Reuse

6 Lbs Large Weight 4 Step Rock Tumbler Grit Set, Tumbling Media Refill-Coarse / Medium Grit / Pre-Polished / Final Polish, Works With Any Rock Tumbler, Rock Polisher, Stone Polisher

SACKORANGE
LE-04
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Tockrop direct 9.85

Features

★【4 Steps】Be Patient. There are 4 total cycles, 7 days each to have pretty rocks / gems. Step 1, 60 Coarse Silicon Carbide Grit. Step 2, 220 Medium Silicon Carbide Grit. Step 3, 500 Fine Silicone Carbide Grit. Step 4, 1200 Aluminum Oxide Grit. Just measure in the grit, add enough water to cover the stones, seal the barrel, and tumble. The only variable is how much of the product to use in your rock tumbler. We suggest 2 tbsp of grit per pound of stones, which is a good rule of thumb.

★【Large Amount of Grit】This is a large amount of each size grit for the price. This kit comes with enough grit to complete approximately 16-20 lbs of rocks. This kit contains 2 lbs 60 Coarse Silicon Carbide Grit, 2 lbs 220 Medium Silicon Carbide Grit, 1 lb. 500 Fine Silicone Carbide Grit, 1 lb. 1200 Aluminum Oxide Final Polish Grit. COMPATIBLE WITH ALL BRAND TUMBLERS.

★【Jars, Labels & a Scoop】Nice hard plastic jars with lids (as opposed to plastic bags). Bottle caps are very secure. Definitely they will not leak. Use the amount you need and set it back on the shelf for the next round. A scoop is included for the correct dose. No need to pour the material out, which possibly make a mess while doing so. They are neatly packaged and easy to read labels. Tip: you could put your tumbler on a foam pad to eliminate noise.

★【Professional Material】The final polish in this kit is aluminum oxide which is what the professional use (as opposed to silicon carbide), making sure that you can achieve a wet polished look. If you are expecting nice shiny stones you will have to run the last stage. The aluminum oxide is what really makes them shine (providing you have done everything else correctly).

★【Satisfaction Guarantee】 If you don’t get the satisfactory polished stones or there is anything else you are dissatisfied with, please contact us by E-mail, and within 24 hours, we will do our best to satisfy you or give you a full refund while you don’t need to return the product.

#TOP8

Discover With Dr. Cool Replacement Rock Tumbler Barrel For National Geographic Professional Series Tumbler And Hobby Series Tumblers, 2 Pound Rock Polisher Barrel With Leak-Proof Lid

DISCOVER WITH DR. COOL
PROBARREL
5.40 X 5.40 X 5.40 Inches
1.34 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Blue Marble Toys 9.90

Features

POLISHING BARREL – This rock tumbler barrel allows you to polish like a pro. We recommend having a dedicated barrel that is only used for the final step in the polishing process to avoid leaving any remnants of rougher grits that might scratch your gemstones and diminish the final polish.

REPLACEMENT PART – Barrel is compatible with the National Geographic Professional Rock Tumbler and Hobby Series Tumbler as well as the Discover with Dr. Cool Professional Rock Tumbler and Hobby Series Tumbler

QUIET AND CONVENIENT – Constructed of durable rubber and with a leak-proof lid, this barrel is designed to be low-noise and easy to use

EXPAND YOUR ROCK COLLECTION – Use this barrel to polish rocks, gemstones, petrified wood, sea glass, and much more

100% SATISFACTION GUARANTEE – Discover with Dr. Cool is committed to ensuring customers are completely satisfied with their purchase

Wkturn Rock Tumbler Grit Set, Rock Tumbler Grit Polish Refill - 4 Basic Step Tumbling Media (Coarse/Medium Grit/Pre-Polished/Final Polish), Rock Tumbler Set 2.0 For Any Brand Of Rock Polisher

WKTURN
ML20-01
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Shining stone 5.78

Features

💎【Complete Professional Rock Tumbler Grit Kit】WKTURN rock polishing grit set comes with a 5-step grit kit and filler, from coarse grit, medium grit, pre-polish grit, to final polish grit, to ultimate polish colour lifting media. Polishing your rock, glass and gems with ease.

💎【Easy to use】Stage 1 coarse grit to initially shape the raw stone; stage 2 medium grit to smooth the surface of the stone; stage 3 pre-polished stone; stage 4 final polish to get your own stone. The fifth stage, the ultimate colour lift, gives your stone a brilliant finish.

💎【Easy To Storage】Each step of the rock polishing supplie is packaged in a reusable bottle container, making it easier to store than bag packaging and preventing mess. Comes with a small spoon for easy use.

💎【Beginner Friendly】Whether you are a professional rock tumbler or a beginner, warm instructions are provided. Rock tumbler grit and polish refill,universal grit, compatible with all rock tumblers.

💎【Satisfaction Guarantee】Our rock tumbling grit kit, elegantly packaged, is designed to be a gift for children. As an educational toy accessory, we offer a lifetime after-sales service, so buy with confidence,rock tumbler media. Roll over and have fun with it.

Leegol Electric Rock Tumbler Machine - Single Drum 3Lb Rock Polisher (Single Barrel)

LEEGOL ELECTRIC
ROCK TUMBLER
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Leegol Electric 9.70

Features

Power Adapter: 120V/60Hz Barrel Capacity: 3LB

Packaging List: Includes tumbler, 0.5lbs of walnut shell media, five v-belt, and instructions

Professional Features: The durable motor allows you to tumble multiple batches of rocks. An improved, leak-proof barrel is lined with rubber for quieter operation

Easy to Use: Detailed tumbler instructions lead you step-by-step through the rock tumbling process

Professional Rock Tumbler Kit With Cover- Large 3.1Lb Barrel With 3 Speed Settings & Digital 9-Day Timer - Include Rough Gemstones, 4 Polishing Grits, Tumbling Filler Media - Great Science & Stem Gift

ALIKIDS
AL008
7.90 X 7.90 X 11.40 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING

Features

COMPLETE ROCK TUMBLING KIT - Everything you need to create polished gemstones: tumbler, low-noise barrel, half pound of gemstones (9 different types), four polishing grits, sifter, jewelry fastenings, detailed full-color learning guide.

TURN ROUGH ROCKS INTO POLISHED GEMS - Make any stone sparkle and polish everyday rocks into dazzling gemstones! Simple operation and durable design.

DURABLE QUALITY - This high-quality tumbler has a powerful motor that will last for years. Noise reducing leak-proof rubber barrel with stainless steel lid.

EASY TO USE - digital 9-day timer (with automatic shutoff feature), 3 speed settings, beautiful LCD screen.

EDUCATIONAL AND FUN GIFT FOR ALL AGES - Rock tumbling is a fun activity for children of all ages and promotes an interest in geology and science. Exquisite packaging, fashionable appearance.

Tryes Rock Tumbler Kit Adults - Rock Polisher Tumbler With Noise Reduction Cover, Speed&Timer Control, Includes 4 Polishing Grits, Rough Gemstones, Learning Guide Etc. Science Gift For All Ages(Blue)

TRYES
TRYES
13.00 X 5.00 X 13.00 Inches
2.50 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
TrYes Toys 5.75

Features

CREATE YOUR OWN GEMSTONES - Rock tumbling is a hugely popular hobby for kids and adults! This starter rock tumbler makes it fun and easy to turn rough rocks into beautifully polished gemstones, thanks to its simple operation and durable design.

A TUMBLER THAT'S MADE TO LAST - The durable motor allows you to tumble multiple batches of rocks. An improved, leak-proof barrel is lined with rubber for quieter operation while tumbling on the sturdy tumbler base.

ALL-IN-ONE TUMBLING KIT - This kit has everything you need and then some! You get ½ a pound of rough rocks with nine different types of gemstones inside, five jewelry fastenings, and our four-stage rock polishing grit.

EASY TO USE AND EDUCATIONAL - Detailed tumbler instructions lead you step-by-step through the rock tumbling process, A full-color learning guide details how rocks are naturally polished and has fascinating facts about the gemstones in the kit.

SATISFACTION GUARANTEED – The National Geographic STEM series provides kids high-quality educational toys that are a whole lot of fun! If your experience is anything less than extraordinary, let us know so we can make it right for you.

Brave Finder Professional Rock Tumbler Kit - Rock Polisher Tumbler Kit With Digital 9-Day Polishing Timer & 3 Speed Settings,4 Polishing Grits, Rough Gemstones, Stem Science Kit For Adults Kids

BRAVE FINDER
RTB-RT001
1.00 X 1.00 X 1.00 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
MEET TOY 9.85

Features

DIVE INTO THE FUN ROCK TUMBLER KIT – Rock polisher kit is an fun and educational toy, that is suitable for kids and adults.Thanks to its simple operation and durable design, you can easily turn everyday rocks into dazzling polished gemstones and crystals.Let's create your own gems now!

COMPLETE ROCK TUMBLING KIT – Everything you need to create polished gemstones: tumbler, low-noise barrel,4 polishing refill grits, 1 Rock Tumbling Filler media, sifter, 10 types of real rough gemstones,jewelry fastenings,extra tumbler belt and a detailed full-color learning guide.

EASY TO USE – Simple instructions Digital LCD screens with a 9-Day Polishing shutoff feature & 3 Speed Settings for each tumbling cycle, make rock tumbling fun and easy. Control the number of days for each tumbling cycle with the one-touch timer and automatic shutoff feature, set it and forget it! This is a great gift for kids.

DURABLE & QUIETER TUMBLER – Our high-quality tumbler stone polisher has a powerful motor that will last for years. Noise reducing leak-proof rubber barrel with stainless steel lid, which makes it durable and quieter than other plastic models.An excellent STEM activity for kids.

EDUCATIONAL AND FUN TOYS - The rock tumbler fascinates children and adults as soon as they pull it out of the box and is a perfect STEM project for any age which promotes an interest in geology and science. It is the ideal gift for Christmas, Children's Day, Birthday, Thanksgiving Day, and Easter.

Alikids Thumler S Tumbler Heavy Duty Rotary Rock Tumbler

ALIKIDS
1-0269
14.00 X 14.00 X 14.00 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Spark Deals 9.73

Features

heavy-duty, professional-quality tumbler

15lb. capacity

Continuous-duty motor is fan-cooled, with overload protection

Steel hexagon barrel with removable rubber lining for long, efficient, and quiet operation

5-year guarantee on barrel and liner

Nsi Rock Tumbler Refill Classic, Multi/None

NSI
602
6.50 X 2.50 X 6.50 Inches
0.86 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
J+E Supply 7.23

Features

Includes Amethyst, Jasper, Agates and others

8 Oz. Of Precious Stones

0.63 Oz. Of Coarse Grit

1.02 Of Medium Grit

Viyuki Professional Electric Kids Rock Stone Tumbler Kit 3Lb Rock Polisher - Complete Rock Tumbler Kit With Durable Tumbler, Rocks, Grit, Educational Stem Science Kit For Kids All Ages

VIYUKI
VIYUKI-7
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
VIYUKI 6.26

Features

📣NOTE: Please kindly contact us for free replacement if the barrel and belt get broken or if any parts missing from this kit, and the new one will be shipped out in 24 hours. For any issues, we ask you to be patient, we promise to solve all problems. Your 100% satisfaction is our goal.

🍀EASY TO CREATE YOUR GEMSTONES - Rock tumbler kits are a fantastic and exciting activity for children of all ages.Easy operation and durable design. Learn the fun process of rock tumbling with this beginners/professional rock stone tumbler. It will turn rough rocks into beautifully polished gemstones. It is a hugely popular hobby for kids and adults!

🍀DURABLE QUALITY - This simple tumbler is a great way for children to discover a new hobby. It includes a 1 pound of rocks, grit, polisher, some accessories like a necklace and earrings to show off the finished products, and a learning-and-instruction guide. Metal case and high-powered motor give you a workhorse machine that will last for years.

🍀COMPLETE KIT – Rock tumbler for adults, Includes rock stone tumbler base, Replacement tumbler belt(5pc), 3-pound capacity barrel for grinding more Stones,1 bag assorted gems 1 Lb(460g),4 bags polishing grits, and extra water for 4 Steps process,5 jewelry settings, and 1 color detailed instruction guide. That will ensure a great finished product.

🍀NOISE-REDUCING BARREL - Rock tumbler for kids. Thanks to the tumbler’s tire rubber lining, it is ultra-quiet. A 3LB leak-proof barrel that makes less noise than other tumblers. With this kit, you get one pound of rocks that will reveal an assortment of nine gemstones that come from around the world. It’s designed for kids 8 and up.

🍀A FUN AND EDUCATIONAL GIFT: It fascinates children and adults when they open the box. It fosters a love for science, geology, and mineralogy in a fun and exciting way. This kit is ideal for a budding geologist. The learning guide helps beginners understand this process and how it occurs naturally around the world.

Komestone Premium Rock Tumbler Polishing Filler Grit Kit, 4 Bags, Polishing Grits For Tumble Up To 25 Lbs Rocks, Compatible With All Rock Tumblers & Stone Polishers…

KOMESTONE
KSRT003
0.07 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
KomeStone Direct-2 Years Warranty 9.92

Features

We'll help with any issues. 𝐑𝐞𝐚𝐜𝐡 𝐨𝐮𝐭 𝐭𝐨 𝐮𝐬 𝐝𝐢𝐫𝐞𝐜𝐭𝐥𝐲 𝐟𝐨𝐫 𝐫𝐞𝐩𝐥𝐚𝐜𝐞𝐦𝐞𝐧𝐭 𝐨𝐫 𝐫𝐞𝐟𝐮𝐧𝐝, 𝐚𝐧𝐲 𝐢𝐬𝐬𝐮𝐞𝐬 𝐰𝐢𝐥𝐥 𝐛𝐞 𝐬𝐨𝐥𝐯𝐞𝐝 𝐭𝐢𝐦𝐞𝐥𝐲 𝐰𝐢𝐭𝐡 𝐚 𝐩𝐞𝐫𝐟𝐞𝐜𝐭 𝐬𝐨𝐥𝐮𝐭𝐢𝐨𝐧!

These grits are for 4 rounds of tumbling rocks: Cycle 1, Cycle 2, Cycle 3, Cycle 4.

Tumbling with different grits for each round help get mroe beautiful and shinning gemstones.

They are grits specially working for Coarse Grind, Medium Grind, Pre-Polish and Polish.

Each Individual packaged, easy to use and store.

About all grits: Grit #1: Silicon Carbide, Grit #2: Silicon Carbide, Grit #3: Silicon Carbide, Grit #4: Aluminum Oxide. Each weights 30g.

#TOP18

Wakeinsa Rock Tumbler Kit For Kids And Adults,Rock Polisher,Stone Tumbler,Rock Kit Making Gemstones,Necklaces,Stem Toy For 3+ Year Old Kid,Brithday And Christmas Gifts For Kids

WAKEINSA
ZPB-ROCKTUMBLER-1
1.00 X 1.00 X 1.00 Inches
3.54 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
wakeInsa 6.45

Features

WHAT YOU GET - Our rock tumbler set includes a rock tumbler, 4 pcs polishing grits, various rough rocks, jewelry fastenings, a tube of glue and a detailed instruction manual.In addition, 2 drive belts are included in the set for replacement.

EASY TO USE - The instruction booklet in the learning toy set provides detailed instructions on the operation process of rough stone grinding. Any questions you don't understand can also be answered in the study guide booklet, which fully documents how to turn a rough stone into a beautifully polished gem.

EDUCATION TOYS AND STEM TOYS - Rock tumbler science toy is the perfect birthday and Christmas gift for boys and girls. It is a great stem toys for kids, Rock polisher can improve kid's interest in geography and science, as well as exercise kid's patience.

QUALITY GRINDING ROCK POLISHER - Our products use high-quality motors, which are durable and can work continuously for a long time. In addition, the leak-proof rubber barrel equipped with the grinder has a good seal and is quieter than other products.

AFTER-SALES COMMITMENT - We are committed to providing satisfactory customer service. If you have any problem with rock tumbler kit , please contact us first, we will take care of the problem within 24 hours. Your purchase is covered by a 1-year warranty.

Mjr Tumblers 2 Lb Fine 120 220 Silicon Carbide Rock Refill Grit Media Stage 2

MJR TUMBLERS
MJR2P120/220
2.00 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
MJR Tumblers 8.33

Features

2 pounds of 120/220 Graded Silicon Carbide Grit (Step 2)

Compatible with ANY BRAND OF TUMBLER

Comes with FREE Polishing Instructions

Lapidary Stone Silicone Gems Coarse Fine Crystal Luster Minerals Cabochon Rotary Vibratory Aluminum Oxide

Wirejewelry Double Barrel Rock Tumbler With (2) 3 Pound Capacity Drums

WIREJEWELRY
G24-2
14.50 X 6.25 X 6.88 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
WireJewelry 9.81

Features

Professional Grade Double Barrel Rotary Rock Tumbler

(2) 3 Pound Capacity Leak Proof Hard Rubber Barrel to Minimize Noise

Reliable, Heavy Duty Motor Designed to Operate 24/7 for Years

Easy to Follow Step by Step Instructions Booklet Included

Satisfaction Guaranteed, 2 Year Manufacturer Warranty and Lifetime Belt Replacement Warranty

Rockhound's 1St Choice Rock Tumbler Refill Grit Kit Polishes Up To 3 Lbs Of Rocks-Use In Thumlers,Lortone,Dr.cool, Nat'l Geo & Chicago

ROCKHOUND'S FIRST CHOICE
GK
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Rockhound's1stChoice 7.17

Features

Made in the usa - pre measured for precise use in all 3 lb capacity rock tumblers

A great choice for all smaller or beginner "kidz" rock tumblers 1/2 lb capacity & larger (the smaller the tumbler the more charges you get!)

Your Rocks & Gems will Achieve a "glass-like" shine Polish- just like the pros!

This Kit works great in all sizes, varieties & formats of rock tumblers! (just adjust the quantity as needed)

Superior quality grits, informative tips & instructions, economically priced.

Thumler's Tumbler Model A-R2 Kit Rock Tumbler

THUMLER'S TUMBLERS
THUY0115
16.00 X 12.50 X 5.10 Inches
7.00 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
FindingKing 9.79

Features

One model A-r2 #115 rock tumbler

Two rubber tumbling barrels that holds 6 lbs of rocks

Each barrel interior measures 4 1/4" diameter x 4" deep (107 x 101 mm)

Instruction booklet "A Guide for Rock Polishers"

#TOP23

Hisoyal Rock Tumbler,A Premium Upgraded Professional Rock Tumbler Kit Set With Rocks,4 Types Rock Tumbler Grit And Instruction Booklet,Raw Rocks Into Beautiful Gems,A Science Set For Kids All Ages

HISOYAL
Q3-STJ-01
6.30 X 6.30 X 6.30 Inches
4.00 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Wenzhou Xiaomi Electronic Commerce Co., Ltd. 6.99

Features

💎【Greate Your Own Unique Gemstones】Our Rock Tumbler is an extremely popular hobby for children and adults alike.This complete rock tumblering,revamped and upgraded,makes it even easier to turn rough rocks into beautiful gems.The professionally designed rock polish learns during the polishing process,making the polishing process more fun.

💎【Electrode Upgraded,Durable Rocks For Tumbling】The super durable motor gives our rock tumblers top quality without any noise disturbance.Interface has time and speed control settings,fully guaranteed.Upgraded design with high efficiency mode,back and forth rotating rolling to make your stones more glorious.

💎【All-in-one,Complete Rock Tumbler Kit】The rock tumbler kit contains everything you need,plus a few thoughtful giveaways.A professional rock polisher,a leak-proof,low-noise bucket,several different types of rocks,jewelry clasps,rock tumbler media,a strainer,and a warm instruction guide booklet that is very beginner-friendly.

💎【Beautifully Packaged,The Perfect Gift For All Ages】Simulating nature and rock polishing,it is a perfect gift to make as a Christmas gifts for kids.An educational and fun gift for all ages.Make the right shopping choice for your child.More company to explore nature,science and hobbies together.

💎【STEM Series,Lifetime After-sales Service】Our rock tumbling kit,part of the STEM Series,is designed to still provide that quality of educational toy.Learn and explore while having fun.If you have any questions during use,please do not hesitate to contact us,we are at your service for life.A very educational gift mover for young and old.

Cayama Upgraded 2.5Lb Rock Tumbler, 2023 Professional Rock Tumbler For Adults Kids With 3-Speed Motor 9-Day Timer, Rock Polisher With 4 Polishing Grits, Great Science & Stem Gift For Kids All Ages

CAYAMA
1
7.40 X 10.70 X 6.57 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Yingan Store 5.05

Features

❤ ❤ ❤ MOTOR are consumable, you can contact us for MOTOR FOR FREE if broken in 90 days.

✉ ✉ ✉ 90-Day Refund GUarantee & 2-Year VVarranty. yingan0915@163.com

❤ ❤ 【Upgrade Large 2.5 LB Leak-proof Rubber Barrel】: Large capacity Which allows to rock tumbler more rocks each time,To prevent the liquid from leaking during polishing, our rock tumbler is designed with double stainless steel top cover. It is so compact that you will need a screwdriver (which comes in the box) to open it easily. And the thickened barrel will make the machine last longer.

❤ ❤ 【Happy Creat your own gemstones 】: Make any stone sparkle and polish everyday rocks into dazzling gemstones! This snails rock tumbler kit makes it fun and easy to turn rough rocks into beautifully polished gemstones, A 8-year-old knows how to use the rock tumbler ! thanks to its simple operation and durable design.

❤❤ 【Better Results,Shorter Time】: After thousands of tests, we equip each cycle with the most suitable polishing grit and give the most suitable speed and time.Please follow our instructions and you will get dazzling stones in just 24 days.

❤❤ 【Professional Rock Tumbler】: To make tumbling more interesting in an easier way, we upgrade the functions of the rock tumbler:3-speed contol (different cycles use different speeds to make the tumbling result more delicate), up to 9 days timer (auto shut-off + memory function), never worry about sudden power failure. Please follow our instructions, and you will get the dazzing gemstones.

❤❤ 【All in one hobby & STEM educational tumbling kit】: Our CAYAMA rock polisher kit has everything that need for tumbling, including 1LB Same hardness stone rocks, the snail tumbler and the 2.5LB largeb arrel, 2 belts and 4 polishing grits and TPE plastic particle , sifter, screwdriver, barrel brush and illustrated tutorial guide. It's is a very decent and Great toy gift for both kids and adults!

Winhand Rock Tumbler Refill Kit - 0.72 Lbs Mega Rough Rocks 9 Varieties Of Mix Gemstones, Including Rock Polishing Grits Refill Kit For Tumbling & Polishing

WINHAND
WINHAND-04
13.78 X 7.48 X 7.87 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING

Features

REFILL KIT WORK WITH ANY ROCK TUMBLER - These rough tumbling rocks are natural, unpolished, and irregular; Suitable for any tumbler to polish.

ROCKS FOR TUMBLING - Each gemstone is range from 1" to 2". 9 varieties of gemstones - Agate, Sodalite, Amethyst, Green Aventurine, Dalmatian Jasper, Red Jasper, Rose Quartz, Tiger's Eye, these stones are good rocks for tumbling due to their density and harness.

ROCK TUMBLER SUPPLIES - 0.72 lbs (about 16 pcs) rocks, coarse grit, fine grit, polishing sponge blocks.

2 GRADES OF POLISHING GRIT - Coarse polishing grit(STEP 1), Fine polishing grit(STEP 2). Make your own gemstones from rough rocks.

ENJOYING THE TUMBLING PROCESS - There is an entire process that raw rocks go through in order to become shiny Smooth stones.

#TOP26

Rebel 17 Rock Tumbler By Extreme Tumblers - 17Lb Capacity

EXTREME TUMBLERS
R17LS
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
HRMIB 0.00

Features

Large 17lb Capacity Stainless Steel hexagon drum with removable rubber liner

Heavy Duty Powder Coating

Fan cooled motor made ideally for Rock Tumbling

Most durable of its class

Quiet rock tumbler

Care instructions: Hand Wash Only

4.5 Lbs Rock Tumbler Grit Media Complete Kit -Inculde 4 Steps Grits + Plastic Pellets + Ceramic Filler Media, Compatible With Any Brand Tumbler, Rock Polish Tumbling Supplies Set - Stone Polishers

HDONGANY
HD-000076
6.00 X 2.00 X 3.00 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
EMC2World-shop 9.11

Features

Package include Step 1 Coarse Grit; Step 2 Medium Grit; Step 3 Pre-Polish;Step 4 Final Polish,A small spoon in step 3 bottle, 1 Bottle Plastic Pellets,1 Bottle Ceramic Filler Media, Total 4.5 Pounds.

Tips: The different weights and densities, will mean that jars will not have equal amounts of fullness.

Material: Step 1 Grit,Step 2 Grit,Step 3 Grit are Silicon Carbide,Step 4 is Aluminum Oxide,Plastic Pellets are resistant polypropylene,Ceramic Filler Media is High alumina porcelain.

Plastic Pellets and Ceramic tumbler media makes the entire rock tumbling process more effective, improving delivery of rock tumbling grit, quieting tumbler noise, reducing rock breakage, and acting as a filler for smaller batches

Universal Rock tumbler grit Kit, compatible with all rock tumblers.

If you don’t get the satisfactory polished stones or there is anything else you are dissatisfied with, please contact us by E-mail, and within 24 hours, we will do our best to satisfy you or give you a full refund while you don’t need to return the product.

#TOP28

Brookstone Rock Tumbler And Gem Stone Creation Kit For Kids With Rocks & Jewelry Making Supplies Included

BROOKSTONE
709308BRS
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Midtown Merchant 9.75

Features

Looking for an educational all ages gift that makes lsemi-precious gemstones.earning fun? Check out our kid- friendly Rock Tumbler! With this rock tumbler, kids can easily turn rough rocks into semi-precious gemstones

Looking for an educational all ages gift that makes lsemi-precious gemstones.earning fun? Check out our kid- friendly Rock Tumbler! With this rock tumbler, kids can easily turn rough rocks into semi-precious gemstones

This children’s rock tumbler is very user-friendly, with clear precision settings, a strong motor, and a no-mess design that parents love. Within minutes of receiving their tumbler, kids can begin creating beautiful gemstones. They’ll be amazed by the process and eager to learn more. That’s where our learning guide comes in.

Includes a Learning Guide. Our fun and informative learning guide is a fantastic way for children to learn about their rock tumbler, stones, and the basics of geology! Written for kids 8+, this learning guide is the perfect companion to the rock tumbler, igniting a passion for geology in kids across the country.

Includes everything you need. Along with the learning guide, each kit includes one rock tumbler, three packs of unpolished stones (amethyst, jasper, and agates), one pack of polishing powder, a 120V AC adaptor, two rings, a necklace, and a keychain.

Great for Home Learning and Bedroom Decor - With its unique design and one-of-a- kind marbleized case, this high-quality rock tumbler is a great educational gift for kids 8+. When not in use, it also functions as a cool and compact piece of decor.

Yhaspace 10 Pounds Rock Tumbler Grit Kit - Rock Polishing Grit Media Rock Tumbler Refill Grit Media Kit Rock Tumbler Grit Refill Kit

YHASPACE
1
8.00 X 6.00 X 3.00 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
DIY Jewelry Store 6.53

Features

10LB KIT CONTAINS: Step 1 Coarse Grit(2 LB); Step 2 Medium Grit(2 LB); Step 3 Pre-Polish(1.5 LB);Step 4 Final Polish(1.5 LB),Ceramic Filler(2 LB);Strong Polishing Beads(1 LB).

Compatible with ANY BRAND OF Rock Tumbler

Easy to Follow Step by Step Instructions

100% satisfaction guaranteed

7 Lbs Large Weight 4 Step Rock Tumbler Grit Set + Plastic Pellets , Tumbling Media Refill-Coarse / Medium Grit / Pre-Polished / Final Polish, Works With Any Rock Tumbler, Rock Polisher, Stone Polisher

SACKORANGE
32323
6.00 X 4.00 X 3.00 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Sackorange 9.87

Features

**4-Step grit pack with 6 pounds of total weight +1 Pounds Plastic Pellets Rock Tumbling Media Plastic Filler. Our universal grit is designed for any rock tumbler.

Step 1 - 2 lb. 60 Coarse Silicon Carbide Grit, Step 2 - 2 lb. 180/220 Medium Silicon Carbide Grit, Step 3 - 1 lb. 500 Fine Silicone Carbide, Step 4 - 1 lb. 1200 Aluminum Oxide Polish

**Packaged in 5 bottle to safely store unused product for later.

**The kits Will work with all rock tumbler.Makes high quality rock tumblers and materials.

**Purchase with confidence. We proudly back our product with a 100% satisfaction guarantee

Top 10 kids rock tumblers Brands on Amazon

Here is the list of top-rated brands that were evaluated by PM.

Brand Count
National Geographic 7
Polly Plastics 7
Mjr Tumblers 6
Sackorange 3
Alikids 2
Brave Finder 2
Carseatty 2
Cayama 2
Dan&Darci 2
Gitsense 2

Top 10 kids rock tumblers Brands Pie Chart


We've carried out a comprehensive analysis of 43,680 reviews on kids rock tumblers, using our selection criteria to identify the best options in the learning & education toys. Our findings reveal that most customers typically select kids rock tumblers priced around $54.71, with top brands including national geographic, dan&darci, science can, stonecho, koolstone, komestone, lefree store, earth'scode and winhand and hersance

Our team of expert editors reviewed these high-quality items and handpicked the top 30 kids rock tumblers for your consideration. We've also done extensive research on numerous sellers, identifying the best ones in the learning & education toys category. These include amazon.com, surreal brands, suntopdirect, auxco direct, koolstone--2 years replacement warranty, komestone direct-2 years warranty, oriental crane, earth'scode and winhand toys and hersance .

We are dedicated to assisting our users in finding the right tumblers Products based on their needs, saving them considerable time when choosing which kids rock tumblers to buy. We take pride in the number of satisfied users we've helped through our thorough and insightful reviews.