The book, Advanced Cabochon Cutting, by Jack R. Cox was copyright in 1986 and containes 64 pages filled with instructions for cutting cabochons into special shapes such as hearts, crosses & teardrops, plus techniques to use in star stones, cat's-eyes, and how to work with opal and jade, and more. Advanced Cabochon Cutting containes many pictures and diagrams to clarify the instructions for best results.