Review on 💎 Presidium Instruments Gem Indicator (PGI) Handheld Tester: Efficient Diamond and Colored Gemstone Identification Solution by Nicole Mcleod

Mine came with a faulty calibration disc #2. So I had to register the device with the manufacturer for warranty and then contact support to get a replacement calibration disc. What a headache for something that should be ready to go! Before calibrating the device, I performed an accuracy test. 5 of 4 stones (2 rubies and 2 sapphires, 1 peridot) peridot I bought on Ebay came back as green glass 😡, 2 sapphires passed exact test, 1 ruby passed exact test and 1 ruby was tested as spinel . (All bought on eBay). It's too thick/bulky for my hand as it fits comfortably in my hand for long term use. Aside from the calibration test failure and having to contact the manufacturer and file a claim to send me a replacement for drive #2, I would say my purchase was worth it. I would recommend it.