Presidium® Gem Tester

Presidium® Gem Tester

About this Item:The Presidium® Gem Indicator is the only handheld tester in the industry specifically for colored gemstones. It indicates up to 31 different types of colored gems based on their thermal conductivity and even features a color input function that allows users to select from a range of 12 common colors, thereby achieving more accurate results. It is recommended to use the Presidium® Gem Indicator in environments at ambient temperatures of 23°C - 27°C. Calibration using the provided calibration disk is also recommended when starting to use the product or when using the product in different environments.