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Gemstones, Minerals & Fossils
Gemstones and Minerals
Some finds from Lowmead
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<blockquote data-quote="Lefty" data-source="post: 265224" data-attributes="member: 2976"><p>Good stuff mate! I'd like to be there next Sunday if possible.</p><p></p><p>Just finished another one of the small smokies from last weekend. Been experimenting a bit. This one has lowered crown angles and is definitely brighter than the last one (which is still a nice stone regardless). The light tan and pale brown tinted smokies, I think you can do pretty much anything with them faceting-wise as long as you respect the critical angle. But the ones that look black and don't show their colour until you hold them to the light, I think you need to do what you can to get more light in them. Lowered crown angles is one such method, as is using four or six-fold symmetry which returns the most light (supposedly). It's still a round brilliant, think I might experiment with different shapes with the lowered crown. I have one 130 carat deep smoky crystal - the biggest facetable one from last weekend that I kept - that I want to cut a big single stone from, trying to work out the best way to handle it.</p></blockquote><p></p>
[QUOTE="Lefty, post: 265224, member: 2976"] Good stuff mate! I'd like to be there next Sunday if possible. Just finished another one of the small smokies from last weekend. Been experimenting a bit. This one has lowered crown angles and is definitely brighter than the last one (which is still a nice stone regardless). The light tan and pale brown tinted smokies, I think you can do pretty much anything with them faceting-wise as long as you respect the critical angle. But the ones that look black and don't show their colour until you hold them to the light, I think you need to do what you can to get more light in them. Lowered crown angles is one such method, as is using four or six-fold symmetry which returns the most light (supposedly). It's still a round brilliant, think I might experiment with different shapes with the lowered crown. I have one 130 carat deep smoky crystal - the biggest facetable one from last weekend that I kept - that I want to cut a big single stone from, trying to work out the best way to handle it. [/QUOTE]
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Gemstones, Minerals & Fossils
Gemstones and Minerals
Some finds from Lowmead
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