Presidium SAM Diamond & Moissanite Tester Best Built BB-E7 Combination Engraver and Cutter Threads of Crowns

Threads of Crowns

Sorting tray is used to sort stones

Gauges brilliant full cuts

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Thor 8899SP

Presidium SAM Diamond & Moissanite Tester Best Built BB-E7 Combination Engraver and Cutter Threads of CrownsPresidium SAM is a premium entry to the brand's line of testers that utilize properties of electro thermal conductivity and Presidium's signature, retractable probe tips, which maintain consistent pressure against the gemstone during testing, to accurately verify the authenticity of diamonds and moissanite. FEATURES Highly sensitive thermoelectrical probe to distinguish diamonds against a wider range of moissanites including the new low electrical