Presidium Reflectivity Meter

A light and portable instrument that instantly identifies diamonds, moissanites, and gemstones based on their optical properties.

Designed to identify polished gemstones, Presidium Reflectivity Meter measures the quantity of light reflected through the gemstone in order to provide an instant reading of its reflective index.

PRM includes a built-in Reflectivity Chart Listing for the most common gemstones for immediate reference. It can be used without a thermal conductivity tester.