Moissanite tester by GemTrue (Moissanite Plus) Electronic Gem Testers and you look up the

and you look up the number on standard charts

standard alkaline batteries are supplied with this item

sit at your workplace

know how big a 1/4 carat or 1/2 carat diamond is

Moissanite tester by GemTrue (Moissanite Plus) Electronic Gem Testers and you look up theSummary Must be used in combination with a diamond tester, i. e. if a simple (thermal conductivity) diamond tester says the stone might be diamond or Moissanite (you won't know which!), test it on this to see if it's Moissanite. Accuracy Guarantee A 'Moissanite' reading on this tester indicates that there's a probability that the stone is Moissanite. It is not guaranteed, the latest Moissanites will show up as diamond on this tester and most synthetic