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Sherri Shumaker

Diamonds in a fire

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It shouldn't. What diamond testers check is thermal conductivity (and electrical conductivity in some cases), and there is no theoretical reason why these should be changed by exposure to a fire. This said, most testers are relatively unreliable at the best of times, and all require some expertise to be used correctly.


Davide - Specialised Consumer Information and Assistance,
Diamonds by Lauren (http://www.diamondsbylauren.com)
davide@diamondsbylauren.com

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A diamond tester checks for thermal conductivity. Diamond is a very good thermal conductor. It should not return false negatives, if the tester itself is working properly. 


Swanstar Diamonds.
http://www.swanstar.com.au
Melbourne, Australia.

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