The 6 Best Diamond ring testers (2023 reviews)

The hmkis diamond ring tester is long-lasting, rigid and fits well with your regular usage like a dream. It is definitely a neat contraption to have around the house. If you follow the directions clearly and only test it on glass ruby crystals or diamonds etc it works great and is very accurate. It will show the hardness of stone. The diamond tester helps to identify real and fake diamonds, as well as other jade. It will not light all the way up or it will go slowly.

This equipment requires calibrations that are not easy to achieve. It is extremely simple to use and worth spending the few dollars on if you have real diamonds to test the accuracy then you can test the random little things with certainty.

Why We Like This:

Supporting alkaline mercury-free environmentally friendly high-performance battery
Small enough to fit a purse or jacket pocket
One of the new comers and featured product

Best For jeweler: Stillcool Diamond ring Tester

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The stillcool diamond ring tester should be able to handle its purpose and duties with ease. The chemical composition for all man made and natural corundum is exactly the same. It can be used on both real and fake diamonds. The stillcool diamond tester pen is easy to operate. The professional diamond tester will light up over 9 and emits audible sounds. The cap fits on it well and keeps the tip protected along with the case. This protects the surface of the test object is clean, flat and dry. The probe will heat up until another indicator is lighting up. It makes a different noise if touched to metal or glass. This will let you know what gold and silver you have to.

Why We Like This:

Simply enough to just add batteries
Great tool to have for detecting diamonds
Great value, easy to use and accurate

Best For estate sales tag sales: Hqdz Diamond ring Tester

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For a low asking price, hqdz diamond ring tester has managed to overwhelm their customers by packing as many features as they could. Hqdz’s diamond tester pen and 60x led lighted loupe combo is a must have tool kit when you are going to a garage sale, flea market, swap meet, etc. It is reliable or precise enough to be used by jewelers. It is lighting up on the scale. It comes with led lights and audio indication.

The test takes a few minutes, please turn off the power after the test is complete. It is powered by DC 9v battery x 1 ( included) to test diamond turn on the switch. It is great for estate sales and tag sales. Alternatively, its also a great tool to have when testing your own jewelry.

Why We Like This:

Large / small switch for testing diamonds / - 8 points
Great and comes with a lot
Good brand reputation

Best For quick reference: Gemoro Diamond ring Tester

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The gemoro diamond ring tester's superior materials makes sure that it ages well with use. The engineers at gemoro superior instruments have developed an enhanced version of their second-generation pro-d ii simultaneous diamond and white sapphire tester. It includes a gemoro protective ballistic nylon carrying case, aluminum loose stone holder, gemoro test stone cloth, as well as (3) user-replaceable aaa nimh rechargeable batteries, a universal multi-voltage 100v. It is great for diamonds very good.

The PRO-D 3 glowing light bar/probe tip cone glows PINK for WHITE SAPPHIRE detection. The Sleek ergonomic shape comfortably rests in and on your hand when held. This tester can only identify if a stone is a diamond or moissanite. It is also the exclusive master distributor for the leading hpht/cvd lab grown detector from yehuda, called the sherlock holmes 4.

Why We Like This:

Precision retractable probe-tip with enhanced durability
Identifies, detects, and separates diamond or moissanite from cz
Came with rechargeable batteries, is working great
Intuitive finger grip pads for increased user-friendliness and ease of use

Best For identification assistance: Mollo Diamond ring Tester

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Mollo makes beautiful and great tester with classic and smartly choosen materials. A new portable diamond observation tool, you can use infrared irradiation in diamond to evaluate the diamond. The torch can directly display the light color effect under the tester of diamond and then to evaluate the quality of diamond. It is good for curiosity testing at home.

The handheld design is convenient to carry. The test takes a few minutes, please turn off the power after the test is complete. It is lighting up on the scale. The compact size is easy to use and portable to store. It is suitable for jewelry display or identification assistance.

Why We Like This:

Works like a charm for being so affordable
Metal, simple calibration for stones of various sizes
Made of quality material, which is eco-friendly and durable to use

Best value For money: Presidium Diamond ring Tester

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We know from years of feedback from readers, customers and amazon sellers, what most people want in a cost-effective tester. The presidium diamond ring tester is exactly that - it's a simple tester that hits all the right notes. It's a very good diamond tester. It comes with rechargeable batteries and an ac adaptor to recharge them. It has a probe that touches the stone and sends out a frequency for diamonds. It's also very easy to use. It comes with a matching adapter. It comes with a cord that plugs in to Presidium Diamondmate-C and in to electricity. It's better built and will last longer. It does not tell you other stones, only lights when the stone is natural. The unit comes with one which can be recharged with the charger that comes with it.

Why We Like This:

Able to test smaller stones in really tight, recessed spaces easily
Good brand reputation