Gemstones of the World

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The comprehensive listing of gem materials that includes many of the most important identifying features makes it useful for identifying both common and unusual gemstones.

Each entry offers complete information on a stone's formation and structure; physical properties and characteristics; and methods of working, cutting, and polishing.index, Authoritative guide to the world's gemstones with true-to-nature colour photographs of over 1,400 specimens, many shown in both rough and cut states. It covers everything from the romance and history of more than 1,400 gemstones to their geographical locations, scientific, physical, and color properties, and they way they are formed, structured, and mined. True-color photographs picturing gemstones, many in rough and polished states, with full details of where they are found, how they are mined and cut, how they are imitated, how they are identified and classified, what their characteristics and physical properties are. Additionally, unlike the other treatments he mentions, no detection method for diffusion treated corundum is given. The text begins with a brief mineralogical and gemological study, focusing on such topics as basic crystallography and crystal systems, hardness, refractive index, and other pertinent features of gem materials.

The 103 third parties who use cookies on this service do so for their purposes of displaying and measuring personalized ads, generating audience insights, and developing and improving products. Although diffusion treatment commonly utilizes titanium, a metallic element, the connection between his description and actual diffusion treatment stops here. It has information on finding, mining, cutting and more, there are also 1,900 photographs to help identify crystals for beginners like me. i would say that i have scanned this book as an entirety and i’m considering that as a read cuz in no way am i gonna read every single word of how gems are cut and other stuff like i’m just gonna scan the things i wanna read. Gemstones in this collection include: Sapphire, tourmaline, garnet, topaz, diamond, pearl, citrine, amethyst, peridot, chrome diopside, tanzanite, Iolite.Each entry offers complete information on the gemstone’s formation, structure, physical properties, and characteristics, along with the best methods of working, cutting, and polishing it. Charts and tables help you identify unknown gemstones and-when you're in the market-how to check for authenticity. Each stone has its name clearly written beneath its picture as well as what location it is found in the world. In addition to the perennially successful Gemstones of the World, first published in 1976, he has authored Collins Guide to Rocks, Minerals, and Gemstones and Handbook of Rocks, Minerals, and Gemstones, among other authoritative guides.