Presidium Diamond Mate Tester (PDMT-A) A pocket-sized intrument that instantly verifies the authenticity of diamonds based on their thermal properties.
Presidium Moissanite Tester II (PMT II) An entry-level pocket-sized instrument that instantly distinguishes moissanites from diamonds based on their electrical properties
Presidium Reflectivity Meter (PRM) A light and portable instrument that instantly identifies diamonds, moissanites and gemstones based on their optical properties.
Presidium Gem Tester / Colored Stone Estimator (PGT/CSE) A light and portable instrument that instantly identifies diamonds and most colored gemstones based on their thermal properties.
Presidium Multi Tester III ® (PMuT III) A pocket-sized instrument that instantly identifies diamonds and moissanites based on their thermal and electrical properties.
Presidium DuoTester (PDT) The only gemological instrument in the industry that tests gemstones using both thermal and reflectivity testing.