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Is it a Diamond? Ruby or Garnet? Sapphire or Tanzanite? Emerald or Jadeite? The PRESIDIUM GEM TESTER PROVIDES THE ANSWERS!!!
The Presidium Gem Tester 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 Tester's accurate performance is based on the fact that different gem stones conduct heat at different rates.
Simply touch the Gem Tester's sophisticated thermoelectric probe to the surface of any Mounted or Loose stone and the specially calibrated dial will show you the relative heat conductivity of the material. Stones as small as 1mm can be tested.
The Presidium Gem Tester can easily distinguish between the following gemstones, a total of 16 species:
The Presidium Gem Tester/Color Stone Estimator Is made under rigid quality standards. It is easy to operate and convenient to own. The light weight portable unit is powered by two (2) AA 1.5 V batteries or the 100/240V Global A/C adapter provided. 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 and includes a built-in metal detector which will alert you if you have accidentally touched the mounting instead of the stone.
1 year factory warranty
Size: L-125mm x W-90mm x H-70mm
Weight : 220gms
What's in the box?
This product typically ships within 1 business day.
Easy to use & accurate Brandalyn Beecroft on Nov 26th 2021
Basically it is just an "estimator" for different gemstones.
The only one test that gives you a relatively safe assurance is the fact that it can distinguish between common glass and gems in general.
When it comes to identifying different types of gems, the "arcs" of groups of gems overlap too much to be very useful.
The only other positive is that it brings you well into the diamond/moissanite range, in which case you will need another more detailed tester like the Adamas to actually distinguish between diamond and moissanite. Unknown on Aug 2nd 2021
With the test for calibration the needle doesn't go as far as "cal"... I don't know why!!!
Besides, I didn't receice the sort of patch on which to scrub the tip of the probe...
Can you help please...!!!
Response from Mineralab: Sorry to hear of your trouble. A simple Calibration adjustment is probably in order. I am copying Presidium Instruments, the manufacturer in Singapore, to assist you with your issues.
Guemache Reda on Jan 3rd 2021
A piece of certified jadeite can give the reading of nephrite, jadeite and spinel.
A nephrite is read as Jadeite and sometimes nephrite.
I have done all reading under similar weather condition and in 22 degree Celsius air con room.
What’s the use of this equipment? Unknown on Jan 17th 2020
The device works well. I am happy to have purchased the item. terry opp on Nov 15th 2019