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. Whether the reader wants to look at the chemistry behind the stones, find out where various gemstones come from, learn about diamonds, rubies, emeralds, jaspers, or other specific stones, or simply look at pretty photographs, this is the book to use. With many charts and diagrams, Schumann offers full coverage of the optical features of gems - light and color, luminescence, refraction, and inclusions - and about densities and the chemical elements of each stone, with fascinating details on different cuts, polishing, synthetic and imitation gems, hardness, cleavage, classification, trade names, rarity, and much more - all with an easy-to-understand text. This is a complete survy of the gemstones of the world - with 1,500 stones illustrated in full colour and described. Even the photographs, while very colorful and helpful, remain unchanged and could benefit from some modernization.

Gemstones in this collection include: Sapphire, tourmaline, garnet, topaz, diamond, pearl, citrine, amethyst, peridot, chrome diopside, tanzanite, Iolite. 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.Physical and chemical properties of each gem or gem group is identified in a header on the top of the left page, followed by notes of interest and specific varieties. Lesser-known and rare gems are not neglected, however, and he has compiled a fairly exhaustive list of gemstones, complete with color, hardness, density, refractive index, crystal system, and chemical composition. Gemstones of the World" is the single, cornerstone volume that every hobbyist, jeweler, jewelry maker, and rockhound needs.

By bidding on, or purchasing this item, you are agreeing to us sharing your name and address details with that 3rd party supplier to allow us to fulfil our contractual obligations to you.This is the best handbook on gemstones, featuring an unusually large number of species, including many rare members. A fantastic, full colour Gemstones of the World poster, listing 182 Gemstones for easy identification purposes. Each entry offers complete information on a stone's formation and structure; physical properties and characteristics; and methods of working, cutting, and polishing. It includes a handy identifier for collectors and mineralogical stats for gemologists and jewellers that covers over 2,000 species of rocks, minerals and organics.

You'll find full treatments of lesser-known gems and minerals-from andalusite to vesuvianite-and a special section devoted to rocks as precious stones, including alabaster, onyx, obsidian, and fossils.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 rock and mineral identification guides. The text is easily comprehensible to those at least somewhat familiar with the science of gemology, and it does a reasonably good job explaining the concepts for a novice. 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 rock and mineral identification guides. mini polished stones with their corresponding names are showcased in a neat and presentable little case. It covers everything from the romance and history of more than 1,800 gemstones to their geographic locations; scientific, physical and colour properties; and the way they are formed, structured and mined.

The book also fully covers the optical features of gems - light and colour, luminescence, refraction and inclusions - and key information about the densities and chemical elements of each stone, with fascinating details on different cuts, polishing, gems, hardness, cleavage, classification, trade names, rarity and more. 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.And this updated edition contains a host of new findings on “Gemstones for Collectors,” additional gems in the “Table of Constants,” and the “double fraction” figures that experts have long wanted—a very special new feature.