Presidium Duo Tester PDT Diamond Gemstone Tester : Arts, Crafts & Sewing

Presidium Instruments Gem Indicator (PGI) Handheld Tester for Identifying Diamonds and Common Colored Gemstones : Arts, Crafts & Sewing

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Conducting Optical Test on Gemstones Using Presidium Duo Tester (PDT II)

Presidium Duo Tester PDT Diamond Gemstone Tester

Presidium Instruments Gem Indicator (PGI) Handheld Tester for Identifying Diamonds and Common Colored Gemstones : Arts, Crafts & Sewing

Presidium Duo Tester II Assisted Thermal Calibration & Comprehensive Gemstone Testing

INCLUDED ASSISTED THERMAL CALIBRATION | Now easily self calibrate your device to your testing environment INDUSTRIES MOST TRUSTED | Gemstone tester

Presidium Instruments Gem Tester II (PGT II) with Assisted Thermal Calibration (ATC) for Identifying Diamonds/Moissanites and Common Colored Gemstones

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GemOro Pro-D 3 Diamond Tester, Test Diamond and White Sapphire Gemstone

Presidium, Duo Tester PDT, Juwelier

Presidium Duo Tester PDT Diamond Gemstone Tester

Presidium Electronic Gem Gemstone Diamond Tester PGT by Presidium

Presidium Duo Gem Tester (PDT) - TD5310