Diamonds & Other Precious Stones & More, Presidium
Presidium Gem Tester II - Differentiates between 16 types of gemstones The Presidium Gem Tester II is based on the invention of Professor Julian Goldsmid from the University of New South Wales in Australia. It was developed to distinguish between diamonds and its other simulants using the principles of thermal conductivity. Diamonds, with their exceptional heat conductivity properties are unlike any other simulants, and are therefore not easily replicable. The Presidium Gem Tester II probe consists of two linked thermometers: one, which is heated electronically, while the other is cooled by the gemstone being tested. The difference in temperature creates an electrical output, which is then amplified and displayed on an analog dial. The Presidium Gem Tester II is now equipped with a Color Stone Estimator display to assist the user in distinguishing popular colored gemstones from each other. It is to be noted that natural and synthetic gemstones have similar physical and optical properties. As such, Presidium Gem Tester II does not distinguish between natural and synthetic gemstones. As with all thermal testers in the market, the tester is not able to differentiate between natural Diamonds and Moissanite. The Presidium Gem Tester II features the following: Included in your package:
- Retractable thermoelectric probe tip that ensures constant pressure between probe tip and gemstone
- Industry’s thinnest probe tip (0.6mm) for testing diamonds as small as 0.02ct
- Tests polished and unpolished gemstones
- Compact and sturdy design
- Differentiates between 16 types of gemstones
- Metal alert buzzer to ensure that probe tip is in contact with gemstone during testing
- Clear and easy-to-read analog dial
- No waiting time between tests
- Built-in Calibration (CAL) and Glass test discs for reference
- Powered by 2 x AA batteries or adaptor
- 125 x 70 x 90mm (length x height x width)
- See instruction manual PDF above
- See video link above
- Presidium
- Presidium Gem Tester II
- Probe pen
- Built-in Calibration (CAL) and Glass test discs
- AC adaptor
- User handbook
- Warranty card
- Protective carrying case
- 2 Pin Plug (for adapters, see item A60021)
