The GemCuts module is finally uploaded.  The initial version defines the 
emerald and round brilliant cuts, but I hope to add more in future 
versions.  This version also includes macros for rings and prong settings.

I got electricity restored in early January, and much to my surprise, 
the sample scene suddenly started rendering twice as fast.  My only 
guess is that with the room being previously ventilated with a tiny 6 
inch (15 cm) fan, my computer wasn't cooling itself efficiently, and the 
CPU throttled back accordingly.  Just a guess.

However, even after the hurricane delay, I'm glad I didn't rush the 
testing.  As recently as less than two weeks ago, I found a bug in the 
ring shank, of all places.  One would think a simple toroid lathe is the 
least likely part to screw up.  Lesson: do comprehensive testing!  Don't 
skimp, and don't take anything for granted.

http://lib.povray.org/searchcollection/index2.php?objectName=GemCuts&contributorTag=Cousin%20Ricky

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