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<p>[QUOTE=&quot;Bronwen, post: 3867688, member: 5833&quot;]Bronwen has not, but it looks clearly like a mass produced jubilee piece.&nbsp; I would say Vulcanite or similar for Her Majesty.</p><p><br /></p><p><br /></p><p>The striations look to me like the result of grinding, not like an internal grain.</p><p><br /></p><p><br /></p><p><br /></p><p><br /></p><p><br /></p><p>Looking at my several cameos set in jet frames, I would say findings were often attached by screwing or pinning in.&nbsp; Because the material is soft, not a very secure way of fixing them on, so you see a lot of ones that have been repaired with an excess of glue.&nbsp; I think many of the large plates some of them have across the back have both pins &amp; glue.</p><p><br /></p><p>[ATTACH=full]319727[/ATTACH]</p><p><br /></p><p>[ATTACH=full]319728[/ATTACH]</p><p><br /></p><p>[ATTACH=full]319729[/ATTACH]</p><p><br /></p><p>The clasps on these 2 brooches &amp; the hinge on the second one look just like those you see on pieces made in materials where the findings are typically screwed in.&nbsp; It&#039;s possible they were also glued as an extra precaution, it&#039;s not clear.&nbsp; Both hinges have been repaired.&nbsp; The first has been replaced altogether &amp; is probably now glued on.&nbsp; The second has the aforementioned excess of glue oozed out around the edges, as well as an over long pin replacing the original bar holding the pin stem.</p><p><br /></p><p>My conclusion is that screwed/pinned on findings are not a guarantee that an item is not jet.[/QUOTE]</p><p><br /></p>

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