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<p>[QUOTE=&quot;Bronwen, post: 443947, member: 5833&quot;]I don&#039;t think so.&nbsp; Think the answer is</p><p><br /></p><p><br /></p><p>I just see grunge.&nbsp; It&#039;s possible it was originally left with the recesses accentuated in a way I see sometimes.&nbsp; Have never found anything written on the topic, but some pieces seem to have something that either is, or is similar to, the fine pumice polishing rouge partially left on.&nbsp; This is either all grunge or grunge collected around a grainy substance that was meant to be there.</p><p><br /></p><p><br /></p><p>I see shell, &amp; not even the darker brown helmet shell that is casually known as sardonyx shell.</p><p><br /></p><p><br /></p><p>As it says in the little primer on the subject Holly linked us to, there is no clear delineation between cornelian/carnelian &amp; sard.&nbsp; Both are the microcrystalline quartz chalcedony, just different shades of red-brown, with sard being the darker end of the range.&nbsp; The word onyx comes from the Latin <i>onychus</i>, a fingernail.&nbsp; So a sardonyx cameo is chalcedony that has a layer of sard, usually the background, &amp; a layer of white, the onyx, typically the figure.</p><p><br /></p><p>Some cameos are cut in stone that has so little color, it is known as chalcedonyx:</p><p><br /></p><p>[ATTACH=full]156067[/ATTACH] [ATTACH=full]156068[/ATTACH][/QUOTE]</p><p><br /></p>

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