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.

Cape Precious Metals - Presidium Gem Tester

Diamond Screener II Smart Wave

Presidium Instruments - The only handheld digital tester in the industry specifically for colored gemstones, and tests for 31 types of gemstones. The Presidium Gem Indicator, the only handheld tester in the

GEMSTONE DUO TESTER

PRESIDIUM GEM Tester II Colored Stones Diamond New Model

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

Presidium® Gem Tester

A&A Jewelry Supply - Presidium® Gem Indicator (PGI)

Presidium Gem Tester II (PGT II) - Performing a test and Reading Results

Colored Gemstone Indicator

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

Presidium® Synthetic Diamond Screener II