GEMSTONE DUO TESTER

Conducting Optical Test on Gemstones Using Presidium Duo Tester (PDT II)

GEMSTONE DUO TESTER

Presidium Gem Tester II — Otto Frei

Presidium Duo Tester-II (PDT-II)

Presidium Duo Tester (PDT) is the only comprehensive tool on the market that combines two proven testing methods for gemstones. PDT differentiates,

Presidium DUO Tester

Presidium PDT-S7 Diamond Gemstone Tester - South Auction

TRI-ELECTRONICS GOLD AND PLATINUM TESTER PRO (GXL-24)

Presidium Gem Indicator - YQ-103

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