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Gem Testers

Gem Testers

Electronic Gem Testers help to distinguish between colored stones that have a similar appearance, colored stones and simulants, or between diamonds and diamond simulants. An Electronic Gemstone Testers is a very unique product, and the only ones we know of are produced by Presidium Instruments.

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Presidium Duotester - Unique Electronic Gem Identification Tool

Presidium Duotester Electronic Gem Tester with Diamond Simulant Kit

$519.00 $459.95

Presidium DuoTester PDT-S7 helps identify diamonds, colored gemstones and moissanites

Presidium Duotester Electronic Gem and Diamond Tester

$389.00 $369.95

European version of Presidium Gem Tester Colored Stone Estimator

Presidium Gem Tester Electronic Diamond And Colored Gemstone Tester - European Model

$239.99 $199.95

Presidium Gem Tester, Electronic Diamond And Colored Gemstone Tester

Presidium Gem Tester, Electronic Diamond And Colored Gemstone Tester

$229.99 $189.95

Presidium Reflectivity Meter PRM

Presidium Reflectivity Meter PRM

$185.00 $169.95

Replacement Probe for Presidium Gem or Duo Tester

Replacement Probe for Presidium Gem or Duo Tester

Price: $49.95

Gemstones of the World by Walter Schumann 4th Edition

Gemstones of the World by Walter Schumann 4th Edition

$24.95 $19.95

120V U.S. AC Adapter for PDT/PDT-S7/PRM testers

120V U.S. AC Adapter for PDT/PDT-S7/PRM testers

Price: $17.50

European AC Adapter for Presidium Duo Tester 220-230v/50Hz

European AC Adapter for Presidium Duo Tester 220-230v/50Hz

Price: $17.50

US AC Adapter for the Presidium Electronic Gem Tester PGT/CSE (120v)

US AC Adapter for the Presidium Electronic Gem Tester PGT/CSE (120v)

Price: $17.50

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Don't be fooled by glass masquerading as precious gems! These gem testers will prevent you from making a costly mistake.