Daisy
Last Updated: Feb 6, 2026
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| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| KAIWEETS Direct | 9.95 | ✅ | ✅ | ✅ |
【Multi-function 】The circuit tester offers full range of electric measurements:AC&DC Voltage/Resistance/Continuity/Frequency/Capacitance//Live Wire/Diode/Phase Sequence.
【Non Contact Voltage Tester】The electric detector enables you to detect voltage without any contact which largely avoids electrical shock.
【Beeper&Indicator Bar】Both are activated when voltage is detected.The frequency of warning tone and the color of indicator light varies depending on the voltage level
【Auto Mode】Operating with auto mode, the electrical checker automatically identifies what is being measured among Voltage, Resistance and Continuity, and shows the reading on display.
【Customer Service】36-month technical support is guaranteed. Please don’t hesitate to contact us if there are any questions with our ST100 smart voltage tester.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| KAIWEETS Direct | 9.95 | ✅ | ✅ | ✅ |
【More Safety】CE CAT.II300V RoHS Certificate. No gloves are recommended during the test, Testing AC voltage needs the human body and ground wire to form a circuit. No Electric Shock Risk, No Dangerous, More Accurate Readings. The current flowing through the human body is less than 0.1uA. (Min current the human body sense:1mA). The internal circuit of the Voltage Pen is connected in series with a large resistor, which will burn out when the current is too large, and the circuit will disconnect.
【Alarm Mode】The buzzer and indicator light will be triggered when voltage is detected. High-frequency beeps means high voltage and live wire are detected. Low-frequency beeps sound mean low voltage and null wire are detected.
【Measurable Voltage】Equipped with a sturdy metal NCV probe for testing AC voltage; the test probe touches the conductor with AC voltage, and the voltage reading will show on display. To obtain more accurate values, it is recommended not to wear gloves when using.
【Multi-Function】Bright LED flashlight for work in dark areas; Automatic Power Off after 5 minutes without operation or signal detection; Pocket-sized, pen hook allows you to carry it in your shirt pocket.
【Special Function】Can be used as a screwdriver for your convenience while working. We provide a 36-Month after-sale service, Please feel free to contact us if you have any concern.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| LilyHouseMall | 5.43 | ✅ | ✅ | ✅ |
This gemstone testing equipment is not only a diamond tester, but also a multi gemstone tester. It can detect if a gemstone is real or fake, including: diamond, sapphire, ruby, crystal, agate, jadeite, and other precious stone of various sizes.
* If the number of lights equals or exceeds 9, and it beeps, it means the diamond is true. * If the lights is about 9 and it beeps, it means the sapphire is true. * If the number is 6.5-7, it means the agate is true. * If the number is 7-8 , it means the crystal is true. * If the number is 6-7, it means the jade is true.
Before Test: 1. Put the battery in the tester. 2. Take off the probe cap. 3. Turn on the switch. 4. Make sure only one light light up on the scale. 5. Make sure the " ready lamp" light on. 6. (If test diamond, you then need to turn on the lights number corresponding to the indoor temperature and diamond weight.). 7. (If test other gems, you'd better calibrate the probe, method: by placing the probe vertically on a glass, then adjusting the light to 5, then test the gems.)
★ NOTICE: * No matter what gemstone you are testing, the probe needle and the tested object must be at a 90° angle. * When testing diamond, your right index finger must keep touching the metal panel on the back of the tester, while you do not touch the panel if you test other gemstones. * Do Not test any metal. * Do Not wear glove.
Product size: 16 * 4 * 2.2 cm. weight: 100g. Power needed: 1x 9V battery (not included). If you have any problem about the testing, please contact us, we would love to help.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Jeweler's Supermarket | 9.89 | ✅ | ✅ | ✅ |
IMPORTANT TO NOTE: This product needs to be calibrated prior to use. If you experience issues with calibration, please reach out to the seller for assistance prior to returning the item.
EASY TO USE DESIGN: Ergonomic handheld design with a rubberized anti-slip grip for easy handling. Light and portable with a convenient carrying case.
THINNEST RETRACTABLE PROBE TIP: Retractable probe tip that ensures consistent pressure against the gemstone during testing for more reliable results. With the industry’s thinnest probe tip size of 0.6mm, the PMuT III tests colorless diamonds as small as 0.02ct.
CLEAR, CONVENIENT DISPLAY: 180-degree multi-viewing LED display for easy readability for either right or left-handed use
ALL-IN-ONE INSTRUMENT: The world’s first tester that tests for both colorless diamonds and moissanites in a single instrument. Powered by 3 AAA batteries.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Clina-us | 9.47 | ✅ | ✅ | ✅ |
【DIAMOND TESTER】 Jewelry Identification Tool is a diamond selector with accurate and reliable reading, but also a multi-gem tester. Made of quality material, which is eco-friendly and durable to use. which is eco-friendly and durable to use.
【EASY TO USE】 A new portable diamond observation tool, you can use infrared irradiation in diamond to evaluate the diamond.Jewelry Identification Tool In accordance suitable for outdoor environment and adverse weather conditions, suitable for jewelry display or identification assistance.
【EASY TO TAKE】 The compact size is easy to use and portable to store. Jewelry Identification Tool Suitable for jewelry display or identification assistance. The handle of ergonomic design is convenient to grip.
【TEST CAPACITY】 Metal, simple calibration for stones of various sizes. The torch can directly display the light color effect under the tester of diamond and then to evaluate the quality of diamond.
【DIAMOND IDENTIFICATION TOOL】It is designed for quick, precise, and safe diamond test. Explosion proof,dust proof, moisture proof and impact proof.This gemstone testing equipment is not only a diamond tester, but also a multi gemstone tester.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| ❌ | ❌ | ❌ |
Tests all colors of gold from 6K to 24K and tests platinum
Easy to read alphanumeric LCD display shows both karat value and gold percentage
Results in seconds
Powered by 9V alkaline battery or multi-voltage 100V-240V AC adapter
One year limited warranty
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Hai-electronic | 9.65 | ✅ | ✅ | ✅ |
♠Professional Diamond Mosang stone Surveymeter will show real diamonds or fakes,Use the big/small switch to test diamonds,Makes an audible sound to easily distinguish readings.
♠It is designed for quick, precise, and safe diamond testing.Harmless to diamonds.
♠Equipped with light to test flourescent reaction of stones.Flexible calibration with multi Level Volume to match different sizes of stones.
♠Easy to use:Real diamonds make sounds and lights >= 9.Fake crystal, such as cubic zirconia (CZ), crystal, glass will not emit sound and light <9.
♠It is the easiest answer for the vast majority of retail jewelers,pawn brokers and chain stores when faced with the decision of which diamond selector to buy.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Molo Electronics | 5.98 | ✅ | ✅ | ✅ |
✔【DIAMOND TESTER】 Jewelry Identification Tool is a diamond selector with accurate and reliable reading, but also a multi-gem tester. Made of quality material, which is eco-friendly and durable to use. which is eco-friendly and durable to use.
✔【EASY TO USE】 Handheld design is convenient to carry.A new portable diamond observation tool, you can use infrared irradiation in diamond to evaluate the diamond.Jewelry Identification Tool In accordance suitable for outdoor environment and adverse weather conditions, suitable for jewelry display or identification assistance.
✔【EASY TO TAKE】 The compact size is easy to use and portable to store. Jewelry Identification Tool Suitable for jewelry display or identification assistance. The handle of ergonomic design is convenient to grip.
✔【TEST CAPACITY】 Metal, simple calibration for stones of various sizes. The torch can directly display the light color effect under the tester of diamond and then to evaluate the quality of diamond.
✔【DIAMOND IDENTIFICATION TOOL】Came with 2-Year Warranty TAKE YOUR CHANCE !!Click the "ADD TO CART "Button Now!Thank You For Your Choice !Package Contents: 1 x Diamond Tester,1 x Diamond torch, (Battery included)
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| LIHUIKEJIEU | 9.68 | ✅ | ✅ | ✅ |
【Complete Tool for Diamonds】Diamond tester package comes with 1 x Jewelry tester, 1 x Jewelry loupe, 1 x leather pouch case for pen, 1 x leather pouch case for Microscope, 1 x 9V battery, 1 x Testing Platform, 1 x Tweezers, 7pieces in total, which are complete and practical for you to test or observe diamonds, bringing you a good using experience.
【Clear Screen Design】These high accuracy diamond testers are designed with a clear screen, so you can get the useful data quickly; The item you are testing will be a true diamond when the data is above 9, and a true emerald crystal agate when the data is 7, you will be able to know in a few seconds whether an item is fake or not, saving your time to recognize.
【Multipurpose】This gemstone testing equipment is not only a diamond tester, but also a multi gemstone tester. It can detect if a gemstone is real or fake, such as diamonds, jades, emeralds, crystals, agates, gems and so on, making it possible for you to distinguish and observe them clearly and easily.
【Practical Jewelry Loupe】Magnifying glass (small microscope) equipped with 60X LED illumination. Diamond test pen can be used for gems, coins, antiques, stamps, reading, inspection, etc. Diamond tester pen is designed for fast, precise and safe diamond testing.
【Application Range】Apply to Industrial Purpose, Circuit Board And Printing , Industry, Medicine, Gardening, Coin, Diamond,Stamp, Jewelry, Appraisal, Education, Geography, Home And Office and more.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Sccety | 5.52 | ✅ | ✅ | ✅ |
Fast and accurate: The Diamond Tester Pen is equipped with an LED light and audio indication. During the test, the LED lights up if the stone being tested is a diamond, and once our Diamond Tester Pen has completed all tests, the pen will beep as well as display a row of fully lit LEDs.
Easy to use: Simply turn on our diamond tester pen detector; place the tip of the diamond tester over the stone (a gentle press is sufficient) and if the stone is fake, crystal or cubic zirconia, the tester will not beep. To determine the clarity of the diamond, use a Loupe, magnifying glass with 60X LED illumination.
Multi-functional testing: This gemstone testing device is not only a diamond tester, but also a multi-gem tester. It can detect the authenticity of gemstones including: diamonds, sapphires, rubies, crystals, onyx, emeralds and other gemstones of all sizes.
FAST AND SAFE: This diamond selection tester is designed for fast, accurate and safe diamond testing. There is no harm to the diamond. The diamond testing pen is a must-have in your toolbox for garage sales, flea markets, swap meets and more.
Applications: industrial use, circuit boards and printing, industry, medicine, horticulture, coins, diamonds, stamps, jewelry, appraisal, education, geography, home and office.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| younike technology | 5.13 | ❌ | ❌ | ❌ |
Application: pawn broking, bank, jewelry shop, precious-metals recovery, jewelry factory, Gemstone Testing Center,precious metals researching.etc.In accordance with archimedes principle water buoyancy method, GB/T1423 of precious metals testing standard,and so on. K value of gold,PT value of platinum,density value,purity percentage can be measured.
The purity of gold,platinum,and other precious metals can be measured in a short time.; Multi-mode,gold mode,platinum mode,other precious metals mode can be shifted; Interface of RS-232C is included
Maximum weight: 300g; Weight resolution: 0.005g; Multi-function; the purity of other precious metals can be measured.such as tin,copper, silver., etc. also can be used as precision balance
Density resolution: 0.001g/cm3; Measuring time: 15S; Function of top and bottom limitation;it can display"OK,HI,LO" in the state of qualified, exceed, less; Prompt alarm.; Function of automatic zero tracking,buzzer warning,and overload warning
Combine archimedes principle with micro electronic technique; the purity can be calculated through measuring density of precious metals.features of no damage on sample; simple operation,fast and accurate Measurement Procedure: a)Measure the gold weight in air,and then press the ENTER button to memory.; b)Place the gold into water to measure the weight,and then press the ENTER button to memory.show the K value of gold,purity percent,density value
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| VETUS INDUSTRIAL CO.,LTD | 9.60 | ❌ | ❌ | ❌ |
◆ Application: pawn broking, bank, jewelry shop, precious-metals recovery, jewelry factory, Gemstone Testing Center,precious metals researching.etc.In accordance with archimedes principle water buoyancy method, GB/T1423 of precious metals testing standard,and so on.<br> K value of gold,PT value of platinum,density value,purity percentage can be measured.
◆ The purity of gold,platinum,and other precious metals can be measured in a short time.; Multi-mode,gold mode,platinum mode,other precious metals mode can be shifted; Interface of RS-232C is included
◆ Maximum weight: 300g; Weight resolution: 0.005g; Multi-function; the purity of other precious metals can be measured.such as tin,copper, silver., etc. also can be used as precision balance
◆ Density resolution: 0.001g/cm3; Measuring time: 15S; Function of top and bottom limitation;it can display"OK,HI,LO" in the state of qualified, exceed, less; Prompt alarm.; Function of automatic zero tracking,buzzer warning,and overload warning
◆ Combine archimedes principle with micro electronic technique; the purity can be calculated through measuring density of precious metals.features of no damage on sample; simple operation,fast and accurate Measurement Procedure: a)Measure the gold weight in air,and then press the ENTER button to memory.; b)Place the gold into water to measure the weight,and then press the ENTER button to memory.show the K value of gold,purity percent,density value
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| liguanru | 3.20 | ✅ | ✅ | ✅ |
Professional multi-functional jewelry tester that can quickly, accurately and safely screen out real and fake jewelry for you with high accuracy and reliable results.
Easy to use, just turn on the tester switch, the probe vertical contact jewelry can be automatically detected, no professional experience, beginners can also quickly master.
Equipped with LED indicators, which can visually indicate the current thermal conductivity of the jewelry and distinguish it by color, helping you to quickly determine the authenticity of the jewelry.
Small size, compact structure, with storage bag, easy to carry, can be easily put into the accompanying bag, take to the outdoor jewelry testing work, is the ideal portable jewelry detector.
Multiple alert modes, when counterfeit jewelry is detected the instrument will alert you through LED indicators and sound, suitable for jewelry stores, auction houses.
Here is the list of top-rated brands that were evaluated by PM.
| Brand | Count |
|---|---|
| Kaiweets | 2 |
| Clina | 1 |
| Gemoro | 1 |
| Hpx | 1 |
| Hqdz | 1 |
| Mollo | 1 |
| Presidium | 1 |
| Topincn | 1 |
| Vaduma | 1 |
| Vtsyiqi | 1 |
We've carried out a comprehensive analysis of 2,127 reviews on gold testers, using our selection criteria to identify the best options in the categories. Our findings reveal that most customers typically select gold testers priced around $258.64, with top brands including gemoro, yukaba, kee, highlandhawker, szxhf, rs mizar, gte, o-nine and dupeakya and hmkis
Our team of expert editors reviewed these high-quality items and handpicked the top 13 gold testers for your consideration. We've also done extensive research on numerous sellers, identifying the best ones in the categories category. These include jeweler's supermarket, aikomi, gemoro official, highlandhawker, szxhf, gold testing equipment, usaboom, acorra* and hmkis and lilyhousemall .
We are dedicated to assisting our users in finding the right testers Products based on their needs, saving them considerable time when choosing which gold testers to buy. We take pride in the number of satisfied users we've helped through our thorough and insightful reviews.