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It is a conductivity tester!
A thermal diamond tester is a tool used by anyone interested in verifying that a gem is indeed a diamond. The tool uses electronics connected to a probe with a fine tip that reads the stone's level of thermal conductivity to positively or negatively test for the mineral diamond.
Well, if you adding sugar to a beaker of distilled water, then you will find that the water is now a conductor of electricity. You can show this with a conductivity tester.
Have you ever heard of the Moh's scale? I believe quartz ranks 7 and diamond 10. If you can obtain topaz which is more common then Corundum and it leaves a streak on the mineral then the mineral is Quartz, but if the topaz or coundum is scratched then it is indeed a valuable diamond.
No tester is not a noun.
The duration of The Tester is 1980.0 seconds.
The Tester was created on 2010-02-18.
Scan Tester was born in 1887.
Scan Tester died in 1972.
Ziran the Tester was created in 1977.
Ruth Tester was born in 1903.
Ruth Tester died in 1993.