The Presidium Gem Tester II is the industries most trusted gem

Gem-eye I – SMARTPRO

Presidium Duo Tester II (PDT II) - Performing a test and Reading test results

Gem Tester II: Quick Diamond/Moissanite Identification & Colored Gemstone Separation

Presidium Gem Tester II — PERRIN

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Singapore Presidium Colored Gemstone Testers Duo PDT Refractometer Diamond Jewelry Appraisal Identification Instruments Tools

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PRODUCT COMPATIBILITY: For use with Presidium Gem Tester II (PGT II) and Presidium Duo Tester II (PDT II) only. INDUSTRIES MOST TRUSTED: Titanium

Presidium Replacement Probe Pen PS2-2 for Presidium Gem Tester II (PGT II) and Presidium Duo Tester II (PDT II)

INDUSTRIES MOST TRUSTED | The only handheld tester specifically for colored gemstones; Quick results in less than 6 seconds. THINNEST RETRACTABLE

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

Presidium Instruments Gem Tester II (PGT II) with Assisted Thermal Calibration

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

Presidium Instruments

Reliable Gemstone Hardness Tester for Industrial Work

Presidium Gem Thermal Tester II/Coloured Stone Estimator Dial (PGT II) - TD53

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