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<p>[QUOTE=&quot;Bronwen, post: 488326, member: 5833&quot;]The new ones are dyed within an inch of their lives and ultrasonically cut.&nbsp; I agree, they might as well be ceramic.</p><p><br /></p><p><br /></p><p>I didn&#039;t think I was confusing you, I thought I was using a great example to illustrate what a <a href="https://www.google.com/search?q=nicolo+intaglio&amp;client=firefox-b-1-d&amp;tbm=isch&amp;source=iu&amp;ictx=1&amp;fir=PLocbeHZJsLmzM%253A%252CDFqDEv8aCAd5VM%252C_&amp;usg=AI4_-kSeKz3AESUGmzQ_5s7Bxbmp42a3ww&amp;sa=X&amp;ved=2ahUKEwiJ8di6vqHgAhVuiOAKHbLMB20Q9QEwAXoECAYQBA#imgrc=_" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://www.google.com/search?q=nicolo+intaglio&amp;client=firefox-b-1-d&amp;tbm=isch&amp;source=iu&amp;ictx=1&amp;fir=PLocbeHZJsLmzM%253A%252CDFqDEv8aCAd5VM%252C_&amp;usg=AI4_-kSeKz3AESUGmzQ_5s7Bxbmp42a3ww&amp;sa=X&amp;ved=2ahUKEwiJ8di6vqHgAhVuiOAKHbLMB20Q9QEwAXoECAYQBA#imgrc=_" rel="nofollow">nicolo intaglio</a> is.&nbsp; If you wanted to search for engraved gems with this particular appearance, that is the term to use.&nbsp; Stones prepared in this way are mainly used for intaglios, but the effect can also be seen in some cameos:</p><p><br /></p><p>[ATTACH=full]162356[/ATTACH]</p><p><br /></p><p>The word &#039;onyx&#039; comes from the Greek for fingernail, so really only applies to the white layer.&nbsp; Most nicolo pieces are sardonyx with the sard layer darkened to black.&nbsp; It&#039;s a very old technique.[/QUOTE]</p><p><br /></p>

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