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<p>[QUOTE=&quot;kyratango, post: 801091, member: 5006&quot;]Testing is testing, if you don&#039;t have pro equipment, the usual objects in the list above give a good clue for the hardness of your stone<img src="styles/default/xenforo/smilies/smile.png" class="mceSmilie" alt=":)" unselectable="on" /></p><p><br /></p><p>Your test situe it between 3 and 6.5 on Mohs scale which is consistent with the 4 range of BJ<img src="styles/default/xenforo/smilies/wink.png" class="mceSmilie" alt=";)" unselectable="on" /></p><p>Jasper is in the 6.5 / 7 range, and would not be scratched by your skewer!</p><p>Another useful list of jewellery stones classified by their Mohs scale range<img src="styles/default/xenforo/smilies/smile.png" class="mceSmilie" alt=":)" unselectable="on" />:</p><p><br /></p><p><a href="https://www.gemsociety.org/article/select-gems-ordered-mohs-hardness/" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://www.gemsociety.org/article/select-gems-ordered-mohs-hardness/" rel="nofollow">https://www.gemsociety.org/article/select-gems-ordered-mohs-hardness/</a>[/QUOTE]</p><p><br /></p>

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