Cape Precious Metals - Presidium Gem Tester

Presidium Gem Indicator (PGI) Gem Tester, 54-1144

Presidium PGI Gem Indicator

Presidium Instruments Gem Tester II (PGT II) with

Cape Precious Metals - Praesidium Digital Leveridge Gauge

Cape Precious Metals - Presidium Multi Tester

Gemstone Testing Machine Black Presidium Gem Tester Pgt-2, For

Testing jewelry using my Presidium Gem Tester II

Gem Tester II: Quick Diamond/Moissanite Identification & Colored

Gem Tester II: Quick Diamond/Moissanite Identification & Colored