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Gemstones, Minerals & Fossils
Gemstones and Minerals
Why do sapphires darken when cut?
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<blockquote data-quote="rough2cut" data-source="post: 119703" data-attributes="member: 3816"><p>I think you deceive your selves when you look at how great a colour is when you hold it up to the light or sit it on a torch lense. If you hold it at waist level with a light shinning down on it then that's what you get. Its the main reason I don't like cutting sapphires. there are very few that will live up to peoples expectations, and when the cutting fee is higher than the stones value it makes you look like a rippoff artist for not knowing how the stone would turn out. This is why I believe stones should be heat treated to make them the best they can be before cutting. If you look at all the posts of rough you can see the cuttable ones easily when there light blue sitting on a mirror, but you can see that they look hazy and need heat treating. No such problem with zircon or topaz.</p></blockquote><p></p>
[QUOTE="rough2cut, post: 119703, member: 3816"] I think you deceive your selves when you look at how great a colour is when you hold it up to the light or sit it on a torch lense. If you hold it at waist level with a light shinning down on it then that's what you get. Its the main reason I don't like cutting sapphires. there are very few that will live up to peoples expectations, and when the cutting fee is higher than the stones value it makes you look like a rippoff artist for not knowing how the stone would turn out. This is why I believe stones should be heat treated to make them the best they can be before cutting. If you look at all the posts of rough you can see the cuttable ones easily when there light blue sitting on a mirror, but you can see that they look hazy and need heat treating. No such problem with zircon or topaz. [/QUOTE]
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Gemstones, Minerals & Fossils
Gemstones and Minerals
Why do sapphires darken when cut?
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