Colored Gemstone Indicator

The only handheld digital tester created specifically for colored gemstones. Get intelligent results in less than 6 seconds with this simple to use, easy to maintain Presidium Colored Gemstone Indicator. Tests for 31 types of gemstones based on thermal conductivity. Color input function of 12 common colors achieves accurate results. Easy to read clear digital LED screen. Presidium patented refined changeable probe tip ensures minimal equipment downtime. Industry's thinnest probe tip (0.45mm) for testing gemstones from 0.2ct. USB port for alternative power source and connectivity.