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The Presidium OTI All-In-One Diamond Tester combines dual optical and thermal testing technology into a single probe, delivering fast, reliable dia...
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The Presidium PDT Duo Tester combines two distinct testing methods into a single professional instrument, giving jewelers and gemologists the tools...
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2 Reviews
The Presidium PMuT III Multi Tester is a premium all-in-one instrument that combines thermal and electrical conductivity testing to identify diamon...
View full detailsThe Presidium Stone Rest is a testing accessory designed to hold loose stones securely while you work with Presidium gemstone testers. By keeping s...
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