Product Review Presidium Gem Tester 2, Testing Precious Stones

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A&A Jewelry Supply - Presidium® Gem Indicator (PGI)

jewelry tool presidium gem tester-ii colored

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Presidium Gem Tester II (PGT II) Testing Diamond, Sapphire, Ruby

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Presidium Gem Tester II (PGT II) - Testing Ruby, Diamond, Sapphire