Presidium

Screen a stone for diamond in seconds, at the bench or across the counter on a purchase. The Presidium PDMT-A DiamondMate is a handheld diamond tes...

Test a stone two ways with one press of the button, so a diamond reading is confirmed before the piece leaves the bench. The Presidium PDT Duo Test...

Read how fast a stone conducts heat and put a name to it at the bench, mounted or loose. The Presidium Gem Tester II (PGT II) gives jewelers and ge...

The Presidium Stone Rest is a testing accessory designed to hold loose stones securely while you work with Presidium gemstone testers. By keeping s...

The Presidium Dial Gauge (PDG) is a precision millimeter gauge designed for gemstone measurement, weight estimation, and ring sizing. Functioning s...

Presidium AC Adaptors provide reliable mains power for a range of Presidium gem-testing instruments, replacing or supplementing battery operation. ...

Confirm what a stone is before you buy it, set it or quote a repair on it. The Presidium OTI All-In-One Diamond Tester combines dual optical and th...

Put a name to a colored stone at the bench instead of sending it out. The Presidium Gem Indicator (PGI) is the only handheld tester specifically de...

Keep your inside ring engraving machine performing at its best with this replacement diamond tip. Designed to fit a wide range of popular inside ri...

The Replacement Probe Pen PS2-2 is a genuine titanium probe pen designed as a direct replacement for the Presidium Gem Tester II (PGT II) and Presi...

An electronic gemstone gauge measures loose stones at the bench more finely than a dial gauge can. The Presidium Electronic Gemstone Gauge (PEGG) r...

Cut a name or a date into the inside of a ring at the bench, one traced character at a time, without a laser or a rotary spindle. The Presidium MP...

A gemstone gauge measures a stone at the bench and turns those measurements into an estimated weight, and this one does the arithmetic for you. The...