Gemstones of the world

With a million copies in print, this updated reference book is the most comprehensive resource on gemstones ever published. It covers all known gemstones in their various forms, featuring over 1,500 full-color photos that display each stone in its natural and polished states. Each entry provides detailed information on a gemstone's formation, structure, physical properties, and methods of working, cutting, and polishing. Explore well-known gems like amethyst and diamond, as well as lesser-known varieties from andalusite to vesuvian. A dedicated section discusses rocks as precious stones, including alabaster, onyx, obsidian, and fossils, alongside organic materials like coral, ivory, amber, and pearl. New market stones, such as charcoite, are also included, along with information on imitations, synthetics, and composite stones. Charts and tables assist in identifying unknown gemstones and verifying their authenticity when purchasing. This is the essential one-volume resource for hobbyists, jewelers, jewelry makers, and rockhounds of all ages. Praised as one of the 100 outstanding Sci-Tech books of the year, it is a must-have for anyone interested in minerals and gems.