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Gemstones, Minerals & Fossils
Lapidary
⭐ Show Us Your Cut Stones - Before And After Photos
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<blockquote data-quote="Lefty" data-source="post: 162787" data-attributes="member: 2976"><p>Unfortunately, if the rough stone looks black it will almost certainly cut a black stone Terry, even if it is in fact deep blue. A deep blue sapphire with a mid-green to olive green cross will cut a stone as black as a bat's arse. If the stone is blue on blue rather than blue on green you might get a little more colour out of it.</p><p></p><p>I cut a little deep blue sapphire the other week, hold it up to the sun or a strong backlight and it looks magnificent - look at it any other way and it doesn't look much different to a piece of polished black spinel. This is not to say that they are worthless - my father has some virtually black (very deep blue) faceted sapphires with official valuation certificates that have pretty ridiculous figures on them, natural sapphires have value in their own right owing to their overall rarity.</p><p></p><p>But now that I facet myself, the mid to lighter greens and yellows seem much more appealing than the dark blues. If you can find a lighter shade of blue they will look very nice.</p></blockquote><p></p>
[QUOTE="Lefty, post: 162787, member: 2976"] Unfortunately, if the rough stone looks black it will almost certainly cut a black stone Terry, even if it is in fact deep blue. A deep blue sapphire with a mid-green to olive green cross will cut a stone as black as a bat's arse. If the stone is blue on blue rather than blue on green you might get a little more colour out of it. I cut a little deep blue sapphire the other week, hold it up to the sun or a strong backlight and it looks magnificent - look at it any other way and it doesn't look much different to a piece of polished black spinel. This is not to say that they are worthless - my father has some virtually black (very deep blue) faceted sapphires with official valuation certificates that have pretty ridiculous figures on them, natural sapphires have value in their own right owing to their overall rarity. But now that I facet myself, the mid to lighter greens and yellows seem much more appealing than the dark blues. If you can find a lighter shade of blue they will look very nice. [/QUOTE]
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Gemstones, Minerals & Fossils
Lapidary
⭐ Show Us Your Cut Stones - Before And After Photos
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