Presidium gem tester.. don't know much about it, they don't make

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Shop gemstone testers gem indicator online with fast shipping and fast delivery. The gemstone test equipment is used in laboratory settings and

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Hi! I'm putting together a gift bag of gemstones for a customer who bought a VERY pricy ring from me and I found this one in the loose gem bag. It shows up on my presidium as glass but the thing is, I know the guy who made the stones and he wouldn't do that

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A light and portable instrument that instantly identifies diamonds and most colored gemstones based on their thermal properties. Presidium Gemstone

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