The New Mexico Faceters Guild maintains this list of resources as an aid, guide or as general information in faceting and gem cutting.
Beginners’ Guide – information to help and structure work for new faceters.
Advanced Faceting Topics – provides advanced faceting information.
Refractive Index – provides a list of stone types and their refractive index.
Gemstone properties – provides information useful for faceters.
Polishing – a guide to polishing media best suited to different stone types.
Dopping – procedures and best practices in how to dop stones.
Machine Gallery – this page contains photos and descriptions of different faceting machines.