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<p>[QUOTE=&quot;Bronwen, post: 11458382, member: 5833&quot;]I think it would be put in the catchall category of jasper, which covers any opaque microcrystalline quartz.&nbsp; If it&#039;s translucent we call it chalcedony.&nbsp; Jaspers can be a solid color, striped, spotted, jumbled, pretty much any color or color combo.&nbsp; Some get named for the place where they occur.&nbsp; Some colors of chalcedony have their own name: dark brown sard; orangey-red cornelian/carnelian; green chrysoprase.&nbsp; The banded agate we are accustomed to seeing used for cameos is chalcedony, often with a dyed background layer.&nbsp; When it has not been dyed, it looks like this cameo of Venus, and is called chalcedonyx:</p><p><br /></p><p>[ATTACH=full]544114[/ATTACH] [ATTACH=full]544115[/ATTACH] [ATTACH=full]544116[/ATTACH][/QUOTE]</p><p><br /></p>

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