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<p>[QUOTE=&quot;Bronwen, post: 2684393, member: 5833&quot;]This thread prompted me to dig out the diamond tester that came with a kit, put in the battery that was supposed to revive my CO2 detector but only proved that it is in terminal condition, &amp; experiment with using it.&nbsp; Had no idea they are so finicky, with ambient temperature &amp; dryness of your skin being factors in how accurately it performs.&nbsp; I probably did not calibrate it quite accurately, because it gave me a reading in the lowest diamond range for corundum stones, but was positively exuberant when applied to actual diamonds.&nbsp; Since it tests thermal conductivity, I can imagine that, if a stone were touching metal on several sides, the reading could be skewed.&nbsp; We await the jeweller&#039;s assessment.&nbsp; <img src="styles/default/xenforo/smilies/smile.png" class="mceSmilie" alt=":)" unselectable="on" />[/QUOTE]</p><p><br /></p>

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