Presidium Gem Diamond Ruby Garnet Sapphire Emerald Tester

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

The Presidium Gem Tester / Color Stone Estimator
provides a quick, easy, laboratory proven way to identify diamond and separate the most popular colored gem stones from one another. This valuable tool can eliminate human error when identifying precious gems. The Presidium Gem Testers accurate performance is based on the fact that different gem stones conduct heat at different rates. Simply touched the Gem Testers sophisticated thermoelectric probe to ther surface of any mounted or loose stone and the specially calibrated dial will show you the relative heat conductivity of the material.

The Presidium Gem Tester / Color Stone Estimator Features

• Is made under rigid quality standards.
• It is easy to operate and convenient to own.
• The light weight portable unit
• powered by two (2) AA 1.5 V batteries
• AC adapter provided. 120V/60Hz AC Adapter (U.S.).
• Calibration is made easy with the two test discs mounted into the frame.
• The solid state probe pen requires no warm up time between tests
• built-in metal detector which will alert you if you have accidentally touched the mounting instead of the stone. 
• Size : L-165mm x W-77mm x H-77mm
• Soft case and hard carrying case
• Weight : 272g about 10 ounces
• 1 year factory warranty