The 5 Best small Diamond testers (2023 reviews)

The hmkis small diamond tester's material feels more premium than its price would suggest. If you love jewelry, this is a good tool to have on your hands. It is a kind of diamond and can be distinguished. The diamond tester helps to identify real and fake diamonds, as well as other jade. If even slightly tilted, it will give no reading or alert as diamond inscriptions are easy.

This diamond tester is a great deal with the jewler scope and rechargable 9v included. It can be distinguished, the hardness of jade and diamond of different materials is different, and the equipment can be distinguished. The 9V battery itself is actually rechargeable as you plug it into a USB cable. The microscope can certified diamond inscriptions easy. You will love the fact it actually comes with its kit, cover cases, a battery, and a lil Flashlight/UVLight Microscope.

Why We Like This:

Easy-peas for someone who is not a jeweler to test their diamonds
Come in a cardboard storage box for extra protection
Comes with a detector for currency

Best For Testing watch crystals: Hqdz Diamond Tester

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The hqdz diamond tester should be able to handle its purpose and duties with ease. This tool really works to amazing accuracy. It is used to determine the hardness of stones. The instructions also mention it going off when it touches metal which is a buzzing sound vs. a 3 beeb tone for diamonds. It is great for home checks on diamonds. The tip heats up quickly and the scale is easy to adjust and read.

The test takes a few minutes, please turn off the power after the test is complete. It does give positives on some metals.

Why We Like This:

Easy to assemble, to carry and use
Great tool to have if you own any jewelry
Great tester to verify real or not real
Diamonds are tested either thermally or electrically

Best For price: Dupeakya small Diamond Tester

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The dupeakya small diamond tester might be a relatively new release, but it's still nothing short of impressive this year, thanks to multiple price cuts and added new features over the past few months. It is a very basic tester, if it glass lights won’t move. It is an electronic instrument designed and manufactured according to the thermal conductivity of diamonds to identify the true and false diamonds. It is used for testing sapphire, ruby, crystal, agate and other stones. This tester does test for various stones and is capable of detecting amethyst, garnet, topaz, and diamond. It also has no reaction at all for glass.

This device works as long as you follow the instructions in the manual. The device needs to be restarted after a few minutes of use to be recalibrated.

Why We Like This:

A must for someone who has jewelry
Works great can test other stones
A great inexpensive option for determining authentic diamonds
Great tester for gems and diamonds

Best For defecting Fake Diamonds: Szxhf small Diamond Tester

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The szxhf small diamond tester is capable of outshining several other tester featured in this list in overall features for the price point. The Black Diamond Selector II" is a portable electronic device for distinguishing real diamonds from other simulated stones. It is an excellent instrument for metal detecting. It is fake crystal, a simulant such as cubic zirconium (cz), and there will be no reaction. It’s easy to use and accurate even on small diamonds. It is designed for quick, precise, and safe diamond testing. It is great for defecting fake diamonds.

Why We Like This:

Emit audible sounds to give accurate reading
Portable electronic device for distinguishing real diamonds from other simulated stones
Large / small switch for testing diamonds +/ - 8 points
Works perfectly and is easy to use

Best For estate sales tag sales: Hqdz small Diamond Tester

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The hqdz small diamond tester is suitable and reliable and fits well with your regular usage. 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 powered by dc 9v battery x 1 ( included) and is reliable or precise enough to be used by jewelers. It comes with led lights and audio indication. It is lighting up on the scale.

The test takes a few minutes, please turn off the power after the test is complete. It is also great for estate sales and tag sales. Alternatively, its also a great tool to have when testing your own jewelry. It is great for estate sales and tag sales.

Why We Like This:

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