Presidium Gem Tester II (PGT II)

Presidium® Gem Tester II  is a premium portable desktop device that utilizes dual thermal and reflectivity tests as well asPresidium's signature retractable probe tips, which ensures constant pressure between probe and gemstone, to accurately separate diamonds and diamond simulants or synthetics such as moissanite from colored gemstones.. The PGT II runs on AC power or two (2) AA batteries.

The industry's thinnest probe tip at 0.06 mm◆ Easy-to-read analog dial with 15 colored gemstones ◆ Built-in glass and calibration test discs◆ Three hours continuous use ◆ Low-battery indicator with auto-shutoff ◆ Battery and AC power ◆ One-year manufacturer's warranty