Presidium Duo Tester II II is the only diamond tester on the market that combines two testing methods for gemstones.
The Duo Tester II differentiates between genuine diamonds based on two parameters: thermal conductivity and reflection indices.
Dipped or covered gems can also be tested with the Presidium Duo Tester.
Free shipping from 150 €.
At home from 24 h.
Financing up to 60 months.
Built-in glass and calibration test disks.
Retractable thermoelectric probe tip that ensures constant pressure between the probe and the gem.
The industry's thinnest probe tip (0.6mm) for testing gemstones as small as 0.02ct.
Metal alert buzzer to ensure the probe tip is in contact with the gemstone during testing.
Large easy to read analog dial with 16 colored gemstones.
Digital index LED display for reading the reflectivity value of the gem (based on refractive index conversion).
Reference chart of the reflective properties of the built-in simulator.
Diamond Simulator Kit for Reflectivity Meter Calibration (optional item provided by Presidium).
Accurate and consistent testing for both indoor and outdoor operation. Try gemstones as small as 0.02ct.
No waiting time between tests. Simple and easy to use. It works with 5 AA batteries or with the AC adapter recommended by the Presidium.