Cheap diamond testers like this “diamondselector II”solved 1990s problems. They catch glass and CZ perfectly, but they fall apart the moment moissanite enters the chat. Even the most expensive gear isn’t foolproof. De Beers’ SYNTHdetect, a $30k screening machine, still has a “referral” result. Gem lab speak for: “I’m not sure, send it to someone else.” Fun facts: • Lab grown and natural diamonds are chemically identical the differences are microscopic growth patterns. • Type IIb diamonds (like s

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4 Easy Steps to Use a Diamond Selector II