Gemtrue Professional Diamond Tester

  • Separate diamonds from other gemstones in the blink of an eye
  • Illuminated tip for easy and clear test results
  • Extremely durable and highly accurate 0.6mm thermos probe
  • Built-in UV light lets you check your diamonds for fluorescence

Diamond Tester Pen - GemTrue Diamond Plus


Instantly separate diamonds from other white gems with the GemTrue Diamond Plus. This high-end diamond tester uses thermos conductivity to distinguish diamonds from different gems. Thanks to this, you can be guaranteed that you’ll be obtaining a diamond the next time you go out purchasing gems. Our diamond tester pen features a straightforward and user-friendly design. This makes the gadget easy to use for anybody out there. Whether you’re a hobbyist, beginning jeweler, or professional gemmologist – this diamond tester is sure to meet your demands.

With its 0.6mm thermos probe, this diamond tester treats you to highly precise and instant readings. The 180-degree touch grip delivers perfect electrical contact between the user’s fingers and the tester for increased accuracy. Simply place the probe onto the gem, and your diamond tester pen will do all the work. You’ll instantly be informed on whether the gemstone that you’re testing is a diamond or not. When it is, the illumination panel of your gizmo will light up blue. This makes it easy for you to read the test results and recognize a diamond. Your gadget also supports a metal alarm that eliminates the risk of false readings.

The diamond tester itself features a compact and lightweight design. You can easily slide it in your pocket or carry it along in your suitcase. This makes your diamond tester pen a great gizmo to have at your side during upcoming trade shows, business trips, or supplier visits. With its professional anti-slip rubber body, the GemTrue Diamond Plus offers comfortable usage. The diamond tester pen is fully automatic and requires no manual calibration. It even comes with a built-in UV light that increases the accuracy of your readings and additionally lets you check your diamonds for fluorescence.

This advanced diamond tester can be used by both left and right-handed people. It is powered by a 9V battery and supports a low power alert to make sure you’ll never run out of juice during the day again. Due to the fact that your gadget requires no waiting time in between the testing of different stones, it allows you to test countless stones in a short period of time. If you order your diamond tester now, we’ll deliver it with a free high-quality leather case, stone holder, and lanyard for easy usage.

Please note that diamond testers only use thermos conductivity. Because of this, they are not able to distinguish natural diamonds from man-made diamonds such as moissanite or CVD. To do so, you’ll need a multi-tester that uses a thermoelectrical probe. These so-called diamond moissanite testers are able to differentiate between diamond, moissanite, CZ, and other sorts of rocks.

Uses 9 Volt 6LF22 (PP3) battery (not supplied).

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