Cape Precious Metals - Presidium Gem Tester

Presidium Gold Karat Tester Kit — PERRIN

PRESIDIUM DIAMOND & GEMSTONE TESTERS - Jeweler's Tools, Supplies

How to Calibrate Presidium Gem Tester ii (PGT II)

Retractable thermoelectric probe tip that ensures constant pressure between probe and gemstone Industrys thinnest probe tip (0.6mm) for testing

Presidium Duo Tester PDT Diamond Gemstone Tester

Presidium® Gem Tester II – ZAK JEWELRY TOOLS

Cape Precious Metals - Gold Test Kit Polished Box

Is it a Diamond? Ruby or Garnet? Sapphire or Tanzanite? Emerald or Jadeite? The PRESIDIUM GEM TESTER PROVIDES THE ANSWERS!!! The Presidium Gem Tester

Presidium Gem Tester/Colored Stone Estimator II

Presidium Diamond Tester Multitester III / Diamond Tester

Presidium Instruments Gem Indicator (PGI) Handheld

Presidium Gem Indicator (PGI) Gem Tester, 54-1144

Gem Tester II: Quick Diamond/Moissanite Identification & Colored