Presidium SAM Diamond & Moissanite Tester

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Presidium® SAM is a premium entry the brand's line of testers that utilize properties of electro-thermal conductivity and Presidium's signature, retractable probe tips, which maint ain consistent pressure against the gemstone during testing, to accurately verify the authenticity of diamonds and moissanite.Metal-contact audio alert ◆ Seven hours continuous use ◆ Virtually instant results ◆ No waiting time between tests ◆ Easy-to-read display with LED indicator ◆ Low-battery indicator with auto-off ◆ AC and battery power ◆ Two-year manufacturer's warrantyThe PRESIDIUM SAM is powered by USB (cord included; 120 - 230 V adapter sold separately) or three (3) AAA batteries (sold separately). Show more