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<p>[QUOTE=&quot;kyratango, post: 1106839, member: 5006&quot;]I don&#039;t know if these testers are based on testing hardness (Mohs scale) or rather warmth conductivity.</p><p>You still can diffferency jasper, opaque, from transparent or totally different looking stones<img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie38" alt=":cyclops:" unselectable="on" unselectable="on" /><img src="styles/default/xenforo/smilies/wink.png" class="mceSmilie" alt=";)" unselectable="on" /></p><p>[USER=2844]@Any Jewelry[/USER], to be totally accurate <img src="styles/default/xenforo/smilies/wink.png" class="mceSmilie" alt=";)" unselectable="on" /></p><p><img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie59" alt=":kiss:" unselectable="on" unselectable="on" /></p><p>, and before HollyBlue points it<img src="styles/default/xenforo/smilies/smile.png" class="mceSmilie" alt=":)" unselectable="on" />, there is&nbsp; only 4 precious stones in definition:</p><p>Diamond, Ruby, Sapphire and Emerald </p><p>Others are semi precious, and lower are the ornamentals ones</p><p><a href="https://theeyeofjewelry.com/stones/precious-stones-semi-precious-stones-differences/" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://theeyeofjewelry.com/stones/precious-stones-semi-precious-stones-differences/" rel="nofollow">https://theeyeofjewelry.com/stones/precious-stones-semi-precious-stones-differences/</a>[/QUOTE]</p><p><br /></p>

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