Presidium Multi Tester III (PMuT III) - Professional Diamond Tester for Real Diamonds, Moissanite & Simulants | Accurate Jewelry Testing Tool for Gemologists & Jewelers | Perfect for Authentication in Pawn Shops, Jewelry Stores & Gem Labs

Just received as described but have not had chance to use much yet. So far so good.Very accurate fir diamond identification.Well, Now I know does not come with a charger...Great productDespite what you read in some of the one-start reviews, this tester works and works very well. We have several of them. We test way more diamonds than most people or businesses in a lifetime, and it works fine. I suspect that those who claim that diamonds test moissanite are probably testing 2 or 3 point stones, they may be dirty, or they may actually be Moissanites. We occasionally come across Moissanites, but they are not common. This is a good tester, don't be swayed by those negative nellies.The tester is easy to use and appears pretty accurate based on testing with stones known to be diamonds and fakes. Doesn’t work if stone is so small that can’t avoid the metal. But think that would be true if other comparable testers.My dad ask for this, still likes it.Thisi tested a Monssanite chain and pass the tester and say me Dimond is crazy, bad machine , no work good oh i dont know what happened, so for what say that recononize thw Monssanite is a liesGood product would buy again fro m them.