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Gemstones, Minerals & Fossils
Lapidary
Another experimental cab - black spinel
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<blockquote data-quote="Lefty" data-source="post: 112606" data-attributes="member: 2976"><p>Here's an example of the camera refusing to see what the eye sees. This was a small Lowmead amethyst crystal with a spiderweb of inclusions through it, making it unsuitable for faceting. However, those same inclusions create an attractive colour play. I decided to see if I could cut it like a piece of opal, free shaping it to get the most out of the included area.</p><p></p><p>I think it came up very nicely and bears fair sort of resembalence to actual opal - there is a nice colour play throughout the stone, the full spectrum of colours in the mauve of the light-coloured amethyst. I reckon it's pretty effective. However, the camera does not see a highly-polished stone with a full play of colour through it, it sees it like this....</p><p></p><p><img src="https://farm8.staticflickr.com/7533/15513500709_2486bdf20f_c.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>....a not-so-great polished stone with mostly white light being reflected back. It just doesn't seem to be able to see the spectrum of colours being refracted back. I promise, it looks nothing like this to the eye.</p><p></p><p>Richard, check your Lowmead crystals closely to see if any display an opalecent look inside - it's worth having a go at <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p></blockquote><p></p>
[QUOTE="Lefty, post: 112606, member: 2976"] Here's an example of the camera refusing to see what the eye sees. This was a small Lowmead amethyst crystal with a spiderweb of inclusions through it, making it unsuitable for faceting. However, those same inclusions create an attractive colour play. I decided to see if I could cut it like a piece of opal, free shaping it to get the most out of the included area. I think it came up very nicely and bears fair sort of resembalence to actual opal - there is a nice colour play throughout the stone, the full spectrum of colours in the mauve of the light-coloured amethyst. I reckon it's pretty effective. However, the camera does not see a highly-polished stone with a full play of colour through it, it sees it like this.... [img]https://farm8.staticflickr.com/7533/15513500709_2486bdf20f_c.jpg[/img] ....a not-so-great polished stone with mostly white light being reflected back. It just doesn't seem to be able to see the spectrum of colours being refracted back. I promise, it looks nothing like this to the eye. Richard, check your Lowmead crystals closely to see if any display an opalecent look inside - it's worth having a go at :) [/QUOTE]
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Gemstones, Minerals & Fossils
Lapidary
Another experimental cab - black spinel
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