Presidium Gem Tester II PGT II Diamonds/Moissanites and Colored Gemstones

  • $ 269.00

THE ALL-NEW Presidium® Gem Tester II

The most trusted and sought-after colored gemstone tester has been redesigned with the user in mind to be more compact, sturdy and portable.

The Presidium Gem Tester II (PGT II) provides users with a quick and easy way to identify diamonds/moissanites and separate up to 15 common colored gemstones based on their thermal properties.

Clear and direct analog display

Built-in Glass and Calibration Discs for reference

The industry's thinnest probe tip (0.6mm) for testing colored gemstones as small as 0.02ct.


  • Retractable thermoelectric probe tip that ensures constant pressure between probe and gemstone

  • Industry’s thinnest probe tip (0.6mm) for testing gemstones as small as 0.02ct

  • Metal alert buzzer to ensure that probe tip is in contact with gemstone during testing

  • Clear and easy-to-read analog dial

  • Can differentiate between 15 types of gemstones

  • Built-in glass and Calibration (CAL) test discs for reference


  • Identifies diamonds/moissanites and most colored gemstones

  • Tests both polished and unpolished gemstones

  • Tests gemstones as small as 0.02ct

  • Consistent and reliable results every time

  • No waiting time between tests

  • Simple and easy to use

  • Runs on 2 AA batteries or adaptor (included)

    Recommended Operating Conditions

    It is recommended to use the Presidium Gem Tester II in environments at ambient temperatures of 18°C - 27°C.

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