For confirming the identity of unknown gemstones, brought to you by Mineralab. The Gem-n-Eye III is fitted with an eye-catching, easy-to-read OLED display, and was internally upgraded with advanced processing capability for greater precision in measurements. It still is built around a 21st Century grade Light Sensor offering greater accuracy and repeatability on top of a precision calibration scheme.

Selling as I bought it by mistake and did not use it much