Talk:Akhavan - Cyclops

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Revision as of 18:39, 20 August 2012 by Arya Akhavan (talk | contribs)
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This design was written for a 300+ piece of clear quartz I picked up in Peru. The issue was that the best yield for this piece was to have a rectangular cushion in the L/W = 1.3 range, but the closest I could get in a working design was L/W = 1.25-ish. The face-up reflection is reminiscent of a cyclops, but don't be fooled - it's much brighter in person, and has nice tilt performance. (I figure I should mention that all the renders I have up use a head shadow.)

The design works in RIs from quartz to moissanite with no changes. I definitely do NOT recommend any materials with a lower RI (so no feldspars or fluorites). If you're cutting this in something with high dispersion, consider raising the crown a bit - BUT, as-is, cutting this in GGG/CZ/ST will give you ridiculous dispersion. More importantly, the raytrace doesn't agree with the render; the raytrace suggests that those black areas will in fact reflect light back, and in a real-life setting with a real stone it'll probably perform much better.

Unfortunately, I didn't realize how difficult I was making this design. There are four 7-facet meetpoints, and twelve 5-facet meetpoints. Even worse, many of these complex meetpoints are codependent - some single facets will meet two or more of these meetpoints at the same time, so if either meet is off, it'll really show. Case in point - the C10 facet will meet the cluster and the C4/6/8/10/12 point at the same time. Thankfully, there aren't ay particularly shallow crown facets, and there aren't any facets that are really close in index and angle.

For jewelry, it's best to put this in something that won't be tilting too much in the short direction. Mounting it in a brooch or large pendant would definitely stop it from moving around too much, but you'd lose the interesting effects you get when you tilt in the long direction.