Presidium PSPGT
Works fairly well, but is very fragile: breaks very easily in ways that can't be repaired.1 of 2 people found the following review helpful. The Presidium Gem
Presidium PSPGT Tester / Color Stone EstimatorIs made under rigid quality standards This valuable tool can eliminate human error when identifying precious gems Simply touch the Gem Tester's
Presidium PSPGT sophisticated thermoelectric
Presidium PSPGT probe to the surface of any mounted or loose stone and the specially calibrated dial will show you the
Presidium PSPGT relative heat conductivity of the material ... »»
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