Presidium Gem Indicator

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Presidium Instruments Gem Tester II (PGT II) with Saudi Arabia

Presidium Instruments Gem Tester II (PGT II) with Saudi Arabia

New PRESIDIUM Jewelry Jewellery Jade Crystal Diamond Selector

Gem Tester II: Quick Diamond/Moissanite Identification & Colored Gemstone Separation

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Presidium Gem Indicator (PGI) Performing a Test and Reading Results