11/08/2026
STANDARD OPERATION: Insert the battery, power on the gem tester, then preheat the tester for 30 seconds. It may mimic diamond readings and beep when exposed to high thermal conductivity products. Testing gemstone diamonds only.
10/08/2026
Read the manual first to maximize accuracy with your diamond detector. The probe is 90 degrees vertical to the diamond. Reset to 4th mark before each test. 1 x Diamond Tester Tools. How to test diamond.
10/08/2026
1 x Diamond Tester Tools. The probe is 90 degrees vertical to the diamond. You can not only test diamonds, but also test the authenticity of agate, jade, and crystal. How to test diamond 3: Turn on the lights number corresponding to the indoor temperature and diamond weight.
10/08/2026
Diamond Tester, Professional Jewelers' Gemstone Detector, High Accuracy Diamond Checker Pen Professional for Jewelers, Gem Tester (Jewelry-Only Detection). Read the manual first to maximize accuracy with your diamond detector.