Presidium Duo Tester II (PDT II)

Presidium Duo Tester II (PDT II)

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  • Assisted Thermal Calibraion
  • Built-in Glass and Calibration (CAL) test discs for reference
  • Retractable thermoelectric probe tip that ensures constant pressure between probe and gemstone
  • Industry's thinnest probe tip .06mm for testing gemstones as small as 0.02ct
  • Metal alert buzzer to ensure that probe tip is in contact with gemstone during testing
  • Large easy-to-read analog dial with 16 colored gemstones
  • Digital index LED display for reading of reflectivity value of the gemstone(based on conversion from refractive index)
  • Built-in simulant reflective properties reference chart
  • Diamond simulant set for calibration of reflectivity meter (optional item provided by Presidium)


  • Tests gemstones using dual tests of thermal reflectivity properties to know more about the gemstone
  • Accurate and consistent tests for both indoor and outdoor operation
  • Tests gemstones as small as 0.02ct
  • Clear and visible display for ease of reading measurements for both thermal and reflective test
  • No waiting time between tests
  • Simple and easy to use
  • Runs on 5 AA batteries or with recommended Presidium AC adaptor


  • Length: 172mm (6.77inches)
  • Width: 77mm (3.03 inches)
  • Height: 85mm (3.34 inches)

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SKU: Presdium Duo Tester II (PDT II) Presidum Probe Price Quantity Status
DCPROBE-N - - $55.95
DC709N - - $389.00

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