Arete synthetic-diamond tester by Gemtrue, 'Duo' model, includes a Diamond Experior tester Options_Mains Optional That's very easy with loose

That's very easy with loose stones

this item is not supplied with instructions

Can test any stone mounted in jewellery and it also comes with a stone-holder for testing loose stones

everything nicely presented in a large cardboard box

Our probe only lasted 3 months

Arete synthetic-diamond tester by Gemtrue, 'Duo' model, includes a Diamond Experior tester Options_Mains Optional That's very easy with looseSummary Arete synthetic diamond tester plus a free Diamond Experior thermal diamond tester. Between them, they test for natural diamond, synthetic (= lab grown) diamond, Moissanite, and "any other stone". The GemTrue Arete is an essential tool for the experienced jeweller and professional diamond dealer, it is for testing known diamonds, to see if they are natural or synthetic. That means you must first test the stone on a good quality diamond tester