presidium gem diamonds gemstone computer gauge pgcg new open box

presidium gem diamonds gemstone computer gauge pgcg new open box

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Light Green TOURMALINE 5mm Band Ring - Sz 9.25 - Comfort Wear - Presidium Tested

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PRESIDIUM Gem Tester II Colored Stone and Diamond/Moissanite Tester - NEW IN BOX

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Vtg Sterling Silver 3 Row Ring - Petite Iolite Stones - Sz 6 - Presidium Tested

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Agate Pendant OLD Tests on Presidium II See photos Reddish brown gray dk browns

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Presidium Replacement Probe Gem Thermal Tester (PGT II & PDT pre 2019 ) - TZD53A

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$Jewelry Gemstone Testers Duo PDT Refractometer Diamond Identification Tools$

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