Diamond Tester, High Accuracy Jewelry Diamond Tester PenProfessional Diamond Selector for Novice and Expert, Thermal Conductivity Meter- Perfect for food, tablets, powder, gemstones, coins, jewelry, weed,gold, silver, coins and etc.

Accuracy and portability are what we pursue all the time, we've been working on it to becoming your precision stewards.
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How To Test Diamond

Turn on the switch.
Make sure only 1 light is lighting up on the scale.
Wait few seconds for the probe to heat up until Lamp on ready OK.
Turn on the lights numbers corresponding to the indoor temperature and diamond weight.
If don't know. Set 4 lights is lighting up on the scale.
Start test diamond, no need to adjust the switch switch.
Use the diamond discriminator probe to make 90-degree contact with the measured object, and observe the indicator light change.
It needs a little bit of force to stop it on the diamond surface and make full contact.
If unsuccessful, please repeat the second step.

Diamond Tester Pen

Test result analysis
If lights >= 9 and have sounds, it is true diamond.
If lights If lights is 7 or 8, it is true crystal.
If lights is 6 or 7, it is true jade.
If lights is 4 or 5, it is glass.
Don't test metal，Don't wear gloves.
In a low temperature environment, the battery discharge is weakened. Please raise the battery temperature to above 10 degrees Celsius.
The test takes a few minutes, please turn off the power after the test is complete.
Our products are all from factory direct supply, we can guarantee 100% inspection before shipping. If any problems of our products really exist, an exchange or a refund is available.