Presidium Gem Tester II

Presidium Duo Tester II Assisted Thermal Calibration

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Is it a Diamond? Ruby or Garnet? Sapphire or Tanzanite? Emerald or Jadeite? The PRESIDIUM GEM TESTER II PROVIDES THE ANSWERS! The Presidium PGT II Gem

Presidium Gem Tester II

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Presidium Gem Tester II Color Diamond Tester

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HOW TO Calibrate the Presidium Gem Tester II

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