Presidium Gem Tester

• Presidium Gem Tester (PGI) for accurate gemstone identification. • Utilizes thermal conductivity to differentiate stones like diamonds, ruby, sapphire, and quartz. • Capable of identifying up to 31 types of gemstones with results in seconds. • Features a narrow probe for testing small stones and a clear digital screen. • Portable and easy to use in various locations. • Essential tool for jewelers and gem enthusiasts.