Moissan/Diamond Tester: •Diamond Tester: This gemstone testing equipment is not only a diamond tester, but also a multi gemstone tester. •Test Diamond: Fast, accurate and safe diamond testing. LED light and audio indicate testing result. •Non-destructive Testing: This Diamond tester is non-destructive testing, does not harm your belongings. Diamond Selector II: •Horizon "Diamond Selector II" is a portable electronic device for distinguishing real diamonds from other simulated stones. It is designed for quick, precise, and safe diamond testing. *Selling As Is--Device has not been used/tested*