M-18-A9 Gold Tester

M-24 Mizar Gold Karat Tester Set

Chemical Kit for the M-24 Gold Tester Testing Solution No. 1995

Gold Test Acid Kit 10K 14K 18K with 2" x 2" Testing Stone

Gold Test Acid Kit 10K 14K 18K Silver with 2" x 2" Testing Stone

Presidium Gem Indicator (PGI) Gem Tester

Gemlogis Bleu LCD Colorstone Meter

Presidium Gem Tester II (PGT II) for Identifying Diamonds/Moissanites and Up To 16 Common Colored Gemstones

9K Gold Testing Acid

Silver Testing Acid CLEAR

Gold Test Kit with Glass Storage Bottles

ET-18 Mizar Gold Karat Tester Set

Presidium Synthetic Diamond Screener II

SAM by Presidium, Diamond Tester and Identify a Wider Range of Moissanites

Presidium Moissanite Tester (PMT II)

SmartPro Gem-Eye I Stone Tester

SmartPro Screen-I Diamond Tester

Presidium Multi Tester III (PMuT III) All-In-One Handheld Instrument for Testing Diamonds, Moissanites and Diamond Simulants

6-Piece Testing Acid Solution Set for Gold, Platinum, & Silver

Chemical Kit for ET18 & M18 Mizar Gold Testers - Activator & Electrolyte