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<p>[QUOTE="Bronwen, post: 3463329, member: 5833"]An interesting hypothesis. I think, though, you would find the black spots are more like little pinholes, not raised bits of adhesive from the dop stick. The back would have been polished. In many places the dots follow darkened veins in the shell, another way the shell itself is strange looking. Could the black spots just be the bottom of the bore holes started above?</p><p><br /></p><p>Thanks for the video. This is the first time I have encountered a mention of the background shell being artificially colored. I would like to know more about that. It is routine to dye the background layer of hardstone cameos but had not heard of there being any need for it with shell.[/QUOTE]</p><p><br /></p>
[QUOTE="Bronwen, post: 3463329, member: 5833"]An interesting hypothesis. I think, though, you would find the black spots are more like little pinholes, not raised bits of adhesive from the dop stick. The back would have been polished. In many places the dots follow darkened veins in the shell, another way the shell itself is strange looking. Could the black spots just be the bottom of the bore holes started above? Thanks for the video. This is the first time I have encountered a mention of the background shell being artificially colored. I would like to know more about that. It is routine to dye the background layer of hardstone cameos but had not heard of there being any need for it with shell.[/QUOTE]
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