Best Diamond Sharpeners in 2026

Daisy
Last Updated: Jul 18, 2026

At a Glance: Our Top Picks for Diamond Sharpeners

3 PACK: Kum 104.03.01 Magnesium Alloy Metal 1-Hole Steel Blade Rectangular Pencil Sharpeners
#TOP1
3 Pack: Kum 104.03.01 Magnesium Alloy Metal 1-Hole
9.7
PM SCORE
KUM 2-Hole Pencil Sharpener Magnesium Alloy Wedge
#TOP2
Kum 2-Hole Pencil Sharpener Magnesium Alloy Wedge
9.7
PM SCORE
Kum 104.03.01 Magnesium Alloy Metal 1-Hole Steel Blade Rectangular Pencil Sharpeners
#TOP3
Kum 104.03.01 Magnesium Alloy Metal 1-Hole Steel Blade
9.6
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 Diamond Sharpeners of 2026

Market Overview
Diamond Sharpeners Reviewed
  • Reviews Analyzed: 5503 Items
  • PM Avg. Rating: 7.3 / 10
23 Products Evaluated
  • Highest Price: $24.24
  • Lowest Price: $1.72
  • Avg. Price: $8.26

3 Pack: Kum 104.03.01 Magnesium Alloy Metal 1-Hole Steel Blade Rectangular Pencil Sharpeners

KUM&KUM
KUM 1040301.3
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
BestSource OfficeSupplies 9.90

Features

This 1-hole DTA tempered steel blade pencil sharpener is made of magnesium alloy metal

The blades are made of high-carbon steel therefore long-lasting and very sharp

Dynamic torsion action built into each blade makes for a smoother & cleaner cut

Features two spare blades on side. Block profile with recessed grip area

It comes in rectangular shape - Sold as 3 per order

#TOP2
Best For Kum

Kum 2-Hole Pencil Sharpener Magnesium Alloy Wedge

KUM
104.05.02
1.00 X 0.90 X 0.40 Inches
0.02 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Mycollectionstore 8.31

Features

Kum Wedge Sharpener - Double-Hole

Kum 104.03.01 Magnesium Alloy Metal 1-Hole Steel Blade Rectangular Pencil Sharpeners

KUM
104.03.01
4.13 X 2.89 X 0.55 Inches
0.02 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
VirVentures 9.95

Features

This 1-hole DTA tempered steel blade pencil sharpener is made of magnesium alloy metal

The blades are made of high-carbon steel, therefore long-lasting and very sharp

Dynamic torsion action built into each blade makes for a smoother, cleaner cut

Features two spare blades on side. Block profile with recessed grip area

It comes in rectangular shape

Kum Long Point Pencil Sharpener With Lead Pointer

ALVIN
AS2M
2.75 X 1.25 X 1.50 Inches
2.08 ounces
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
BestSource OfficeSupplies 9.90

Features

For an extra-long, extra-smooth tip

Four separate precision profile holes

Automatic Stop feature

Dynamic Torsion Action to reduce pencil tip breakage

Also has two lead pointers for 2mm and 3.2mm lead holders

Kum 2-Hole Pencil Sharpener Magnesium Alloy Wedge Profile

KUM&KUM
104.05.01
1.00 X 1.00 X 0.30 Inches
0.02 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
National Art Supply 9.95

Features

This 2-hole tempered steel blade pencil sharpener is made of magnesium alloy metal

The blades are made of high-carbon steel, therefore long-lasting and very sharp

Dynamic torsion action built into each blade makes for a smoother, cleaner cut

Metal sharpeners position pencil at more precise angle

It comes in wedge shape

Kum 107.02.01 Wood 2-Hole Steel Blade Pencil Sharpener, Colors Vary

KUM
107.02.01
1.03 X 0.97 X 0.60 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Kordel 5.54

Features

This 2-hole steel blade pencil sharpener is made of wood

Comes with flexible high-carbon steel blade

Long-lasting and very sharp

Dynamic torsion action built into each blade makes for a smoother, cleaner cut

Kum Glas Sharpener 100 Year Commemorative Edition, Kum, 106.47.11, Transparent

KUM
106.47.11
1.57 X 1.57 X 2.95 Inches
0.17 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Jacksons Art Supplies 9.25

Features

For artistic and professional use

Suitable for 8mm pencil

Made in Germany

Glass chips collector

#TOP8
Best For Kum

Kum 1053021 Model As2Km Two Hole Automatic Long Point Pencil Sharpener, Red Plastic Casing, Makes Long Pencil Point In 2 Steps, Automatic Brake Prevents Oversharpening (Pack Of 2)

KUM
KUM-1053021
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
BestSource OfficeSupplies 9.90

Features

Makes long pencil point in 2 steps, Extra-long extra-smooth tip

Automatic brake prevents oversharpening

Includes two spare blades and Two lead pointers for 2mm and 3.2mm lead holders

Flexible blades use Dynamic Torsion Action to reduce pencil tip breakage

Sharpens the wood casing first, then the pencil lead, in two separate precision profile holes

As2M (1053121), Long Point Sharpener, Sharpens In 2 Steps; 2 Spare Blades Includes. With Lead Pointers For 2 Mm And 3.2 Mm. Blue Only

KUM
105.31.21
2.80 X 1.40 X 1.20 Inches
0.01 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Jacksons Art Supplies 9.25

Features

Automatic long point pencil container sharpeners

Made from polystyrene

The blades are made of high-carbon steel, therefore long-lasting and very sharp

Dynamic torsion action built into each blade makes for a smoother, cleaner cut

Comes in container shape; compact and portable

Kum Az105.72.19-M - Longcone Sharpener "Meisterwerk", Neoprene Bag, 2 Replacement Blades, 1 Piece

KUM
AZ105.72.19-M
1.57 X 1.18 X 0.67 Inches
0.05 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Morgan's Direct USA 9.77

Features

Long cone sharpener for wooden pencils with 8 mm diameter

Wood and lead are sharpened in two separate steps

Sliding stopper allows the lead to be exposed

Sharpener made of precision made material made of magnesium, in a plastic case, with neoprene bag, includes 2 spare blades

Curved sharpener prevents the pen tip from tearing

Kum 306.44.22 Magnesium Ellipse 1-Hole Inner Sharpener

KUM
306.44.22
5.82 X 4.12 X 0.95 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
National Art Supply 9.95

Features

Ellipse 1-hole inner sharpener is shatterproof and made of magnesium alloy

Sharpener contain on a blister card

The blades are made of high-carbon steel therefore long-lasting and very sharp

Dynamic Torsion Action built into each blade makes for a smoother, cleaner cut

Sharpener position pencil at more precise angle

#TOP12
Best For Kum

Temperówka Kum 4In1 Z Pojemnikiem Mix Kolorów

KUM
102KMD
1.77 X 1.38 X 2.36 Inches
0.07 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
BestSource OfficeSupplies 9.90

Features

#TOP13
Best For Kum

Kum 303.58.21 Plastic Lead Pointer Pencil Sharpener, 1 Assorted

KUM
303.58.21
0.38 X 0.31 X 0.25 Inches
0.02 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
National Art Supply 9.95

Features

Lead pointer pencil sharpener is made of polystyrene

It has recessed grip zone on both sides, used for 2mm leads

The blades are made of high-carbon steel, therefore long-lasting and very sharp

Dynamic torsion action built into each blade makes for a smoother, cleaner cut

Comes with polystyrene body and assorted colors

#TOP14
Best For Kum

Kum 105.39.21 Magnesium 2-Hole Double Sharpener, Colors Vary

KUM
105.39.21
1.72 X 1.72 X 1.06 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
BestSource OfficeSupplies 9.90

Features

2-Hole double sharpener is made of magnesium alloy

This double sharpener comes with 8mm and 10mm holes for some special-diameter triangular and hexagonal pencils

The blades are made of high-carbon steel, therefore long-lasting and very sharp

Dynamic torsion action built into each blade makes for a smoother, cleaner cut

Comes with plastic container, pencil hole cover

#TOP15
Best For Kum

Kum 801.05.11 Tempered Steel Spare Blades For Kum Automatic Pencil Sharpeners, Pack Of 3

KUM
801.05.11
1.56 X 1.29 X 0.39 Inches
0.01 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
National Art Supply 9.95

Features

Spare blades for pencil sharpeners

Made of high-carbon tempered steel

Features long-lasting and very sharp

Dynamic torsion action built into each blade makes for a smoother, cleaner cut

Kum 105.26.21 Softie Magnesium Alloy Left Handed 2-Hole Steel Blade Pencil Sharpeners, Colors Vary

KUM
105.26.21
2.30 X 2.30 X 2.67 Inches
0.07 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
BestSource OfficeSupplies 9.90

Features

This softie 2-hole inner sharpener with pencil-hole cap is designed for left handers

Made of magnesium alloy material

The blades are made of high-carbon steel, therefore long-lasting and very sharp

Dynamic torsion action built into each blade makes for a smoother, cleaner cut

Particularly for soft sharpening

Kum Lefty Pencil Sharpener For Lefties Made In Germany

KUM LEFTY
105.18.29
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Foxberry Store 7.32

Features

2-hole sharpener

For 8mm and 11mm diameter

Made of milled magnesium alloy

Golden coated with recessed grip zone

With 2 spare blades

#TOP18
Best For Kum

Kum 402.11.21 Correc-Tri M1 Metal Triangular Sharpener And Eraser, Colors Vary

KUM
402.11.21
1.10 X 1.10 X 2.91 Inches
0.04 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
LuProStore 9.87

Features

Metal sharpener made of precision-milled magnesium alloy with a high carbon steel blade

All-purpose translucent eraser with plastic cover

Triangular shape and pencil hole cover

Customer will receive one sharpener in any of the following colors: orange, green, pink and blue. Color is random and cannot be chosen at this time.

Approximately 3 inches tall

#TOP19
Best For Kum

Kum 303.33.21 Polystyrene Ellipse Ice Inner Sharpener, Colors Vary

KUM
303.33.21
4.02 X 0.97 X 0.97 Inches
0.03 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Zack's Edu Castle 9.88

Features

Ellipse ice inner sharpener is shatterproof and made of polystyrene

The blades are made of high-carbon steel therefore long-lasting and very sharp

Dynamic torsion action built into each blade makes for a smoother, cleaner cut

Sharpener position pencil at more precise angle

Available in assorted colors

#TOP20
Best For Kum

Kum 103.59.21 Magnesium Maxi Double Oval Pencil Sharpeners With Container, Colors Vary

KUM
103.59.21
1.95 X 1.08 X 2.25 Inches
0.06 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
BestSource OfficeSupplies 9.90

Features

Maxi double pencil sharpener with container made of magnesium alloy metal

Magnesium alloy sharpeners position pencil at more precise angle

The blades are made of high-carbon steel, therefore long-lasting and very sharp

Dynamic torsion action built into each blade makes for a smoother, cleaner cut

Comes in oval-office shape with pencil hole cap

Kum Brass 2-Hole Pencil Sharpener (142-2)

OOLY
142-2
1.02 X 0.98 X 0.55 Inches
0.08 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING

Features

Two-hole brass INOX sharpener

Wedge profile

Dynamic torsion action tempered steel blade

Kum 217T A7 1-Per Blister Card Sharpener

KUM
105.04.72
3.60 X 2.30 X 1.70 Inches
0.02 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
BestSource OfficeSupplies 9.90

Features

Pencil sharpener 2-hole with container on a blister card

Polystyrene sharpener and container

High quality, made in Germany

Kum 1030631Org Model 430 M1 Steel Blade Barrel Pencil Sharpener, Orange; Polystyrene Container With Screw-On Top; Inner Sharpener Made Of Milled Magnesium Alloy; High-Carbon Steel Blades

KUM
1030631ORG
1.50 X 1.50 X 2.25 Inches
0.04 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Sale Stores ✅ 9.87

Features

1-Hole steel blade orange barrel pencil sharpener

Polystyrene container with screw-on top

Precision made inner sharpener made of milled magnesium alloy

High-carbon steel blades

Dynamic torsion action built into each blade makes for a smoother, cleaner cut

Made in germany

Top 10 sharpeners Brands on Amazon

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

Brand Count
Kum 18
Kum&Kum 2
Alvin 1
Kum Lefty 1
Ooly 1

Top 10 sharpeners Brands Pie Chart


We've carried out a comprehensive analysis of 5,503 reviews on sharpeners, using our selection criteria to identify the best options in the categories. Our findings reveal that most customers typically select sharpeners priced around $8.26, with top brands including and

Our team of expert editors reviewed these high-quality items and handpicked the top 23 sharpeners for your consideration. We've also done extensive research on numerous sellers, identifying the best ones in the categories category. These include and .

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