Presidium Gem Tester II (PGT II)

Quick, easy method for identify diamonds/moissanite and separating up to 16 common coloured gemstones (Color Stone Estimator) using thermal conductivity. 
Clear, instant analogical display. Suitable for all polished and unpolished gemstones
The tester cannot distinguish between natural stones and synthetic stones, nor treated stones.

Specifications:

• Retractable thermoelectric probe tip that ensures constant pressure between probe and gemstone
• Very fine probe tip (0.6 mm) for testing gemstones as small as 0.02 ct
• Integrated calibration reference disc
• Metal alert buzzer
• No delay between tests
• Intelligent, reliable results
• Runs on alkaline batteries (2xAA) not supplied: approx. 3 hours autonomy or with mains adapter included
• Supplied with pen probe, instruction manual, guarantee card and protective cover
• Weight: 220 g