High Accuracy Diamond Tester Pen Professional Diamond Checker Detector Upgraded Gemstone Selector LED Indicator

SPECIFICATIONS   Brand Name: VAHIGCY   Certification: NONE   Bullet Points:1、Multi Purpose: Diamond tester is an ideal jewelry selector, it can detect the authenticity of gemstones, can be used on all kinds of pieces of jewelry such as diamonds, sapphires, rubies, crystals, agate, emeralds, and other gemstones of various sizes, etc.2、Simple Operation: Put the battery (not included) into the tester, remove the probe cover, turn on the switch, make sure that onlylight is on, make sure the "ready light" is on. In the case of a test diamond, the light corresponding to the room temperature and diamond weight needs to be turned on.3、Test Criteria: If the number of lights equals or exceeds 9 and it beeps, it means the diamond is real. If the light is around 9 and it beeps, it means the sapphire is real. If the number is 6.5-7, it means the agate is real. If the number is 7-8, it means the crystal is real. If the number is 6-7, it means the jade is genuine.4、Note: No matter what stone yo