Diamond cuts

As a kid I was interested in gem cutting but had forgotten all about it until the other day when I stumbled on a lecture by John Barron on Brilliant Cut Diamonds and other Tricks of the Light.

On the face of it, CSG is the ideal technique for constructing a diamond model since in practice it is cut by grinding away material from a raw diamond using a faceting machine. The United States Faceters Guild has a wealth of data on gem cutting and hundreds of designs with the machine settings and guidance in facet formation.