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<p>[QUOTE=&quot;Bronwen, post: 4537633, member: 5833&quot;]My bad.&nbsp; Sounds like the tester is erring toward reading everything as harder than it is.&nbsp; Eilat stone would be relatively soft.&nbsp; It&#039;s a jumble of chrysocolla, malachite &amp; turquoise.&nbsp; I can see that you might get different readings depending on just where you applied the probe.</p><p><br /></p><p>I just have a little cheapie tester that came with a kit, &amp; I&#039;ve only played around with it a little, but do recall you can&#039;t just turn it on &amp; start testing, you have to calibrate taking into account the ambient temperature.&nbsp; Maybe Lizzie&#039;s tester is being affected by the summer heat?[/QUOTE]</p><p><br /></p>

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