I am interested in cutting Briolette style gems but am having a difficult time finding a reliable source of faceting guides. Is there a guide regarding designing these types of cuts? I find references all over the internet with incomplete designs and instructions only to be informed that the material being referenced is not available. Books of patterns do not show what designs are included and are therefore, in my opinion, not a viable approach to pursue. Any suggestions will be greatly appreciated. I have only a slight problem with IGS in general. That being that everything they offer only deals with examination of finished products and basically ignores any information that would benefit someone like myself who would like to work from rough and not recut existing material. Rather frustrating!
Thanks for all your help!