Presidium Gem Tester II (PGT II) - Testing Sapphire, Diamond, Ruby, Jade and More

Vintage Jadeite Oval Plaque with Carved Coral Rose Focalpoint

Gemstone Testing Machine Black Presidium Gem Tester Pgt-2, For

Presidium® Gem Tester II Colored Stones Diamond Testing Machine

Presidium Duo Tester II Assisted Thermal Calibration

Presidium Gem Tester II (PGT II) for Identifying Diamonds

Presidium Instruments

Presidium Gem Tester II (PGT II) - Testing Sapphire, Diamond, Ruby

How to Calibrate Presidium Gem Tester II (PGT II) Tutorial

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

Presidium Instruments

Presidium Instruments Gem Tester II (PGT II) Now with