Gemstone Tester/Color Estimator Presidium

Cas-Ker is your trusted and timely source for precision watchmakers and jewelers tools and supplies. Family owned and operated since 1927, Cas-Ker has the professional grade jeweler and horological products you need to do the work you love.

Presidium Gemstone Dial Gauge

Thermal Conductivity Tester SmartPro Gem-Eye 1 Gemstone Tester from Kassoy

Benchmark, Efficient presidium gemstone tester for Jewellers

Colored Gemstone Indicator

Gemstone Tester Replacement Pen Probe Presidium

Presidium Gem Tester II — Otto Frei

Gemstone Identifier Presidium Refractive Index Meter II

Presidium® Gem Tester II – ZAK JEWELRY TOOLS

Singapore Presidium Gem Tester PGT II Colored Gemstone Testers Estimator Display Gemological Testing Instrument Tools - AliExpress

Presidium PGT/CSE Gem Tester Color Stone Estimator

Gemstone Tester Replacement Pen Probe Presidium

A light and portable instrument that instantly identifies diamonds and most colored gemstones based on their thermal properties. Presidium Gemstone

Presidium PGT-CSE Gem Tester & Colored Stone Estimator

Colored Gemstone Indicator