Facet Diagrams for Cutting Gemstones - FacetDiagrams.org
These diagrams include cutting angles and index settings and often include cutting instructions and other notes. If you have and use GemCad for Windows, these designs have a link to a file in GemCad's ASC format you can download and open directly with GemCad. The third category of designs are those with diagrams published elsewhere on the web.