Colors Gemstone Tester PRESIDIUM Gem indicator PGI

Discover the Presidium Gem Indicator Handheld Digital Tester for 31 Gemstone Types

The Presidium Gem Indicator handheld tester in the industry specifically for colored gemstones

Presidium Gem Indicator (PGI), Gem Tester

Presidium

How to Perform a Test Using the Presidium Gem Indicator (PGI)

Presidium Gem Tester PGT II Colored Gemstone Testers Estimator Display Gemological Testing Identification Instrument Tools

Presidium Instruments Gem Tester II (PGT II) with Assisted Thermal Calibration (ATC) for Identifying Diamonds/Moissanites and Common Colored Gemstones : Presidium: Arts, Crafts & Sewing

MUST READ INSTRUCTIONS BEFORE USING | Presidium is available for any troubleshooting assistance THINNEST RETRACTABLE PROBE TIP | Retractable

Presidium Instruments Gem Indicator (PGI) Handheld Tester for Identifying Diamonds and Common Colored Gemstones

Presidium Multi Tester - YQ-230