Is a computer-aided design (CAD) program for faceted gemstones.
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GemCad for Windows is a computer-aided design (CAD) program for faceted gemstones. It runs under Windows 95 or later on PC compatibles with screen resolution of at least 800 x 600. GemCad simulates a faceting machine and shows you accurate 3-D views of the stone.
GemCad understands symmetry, so you typically have to “cut” only a fraction of the facets to get the full design. GemCad can follow paths of light rays through the stone to allow you to optimize a design to minimize light loss. The end product is an accurate faceting diagram that shows several views of the stone with accurate angles, indexes and dimensions.
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1.9 MB
I use GemCad for Windows, and its sister product, GemRay for Windows. It's great for testing designs loaded from the internet (many which come without a clear cutting order or instructions. I can step through the design and note PCP, TCP, meets, and floating facets and tables.