Artificial Gemstones

Download or read book Artificial Gemstones - A Collection of Historical Articles on the Production of Synthetic Gemstones written by Various and published by Read Books Ltd. This book was released on 2015-05-06 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains classic material dating back to the 1900s and before. The content has been carefully selected for its interest and relevance to a modern audience. Carefully selecting the best articles from our collection we have compiled a series of historical and informative publications on the subjects of gemology and crystallography. The titles in this range include "Gemstone Manufacturing" "The Optical Properties of Gemstones and Crystals" "The Thirty-Two Classes of Crystal Symmetry" and many more. Each publication has been professionally curated and includes all details on the original source material. This particular instalment, "Artificial Gemstones" contains information on their identification, production and much more. Intended to illustrate the main features of artificial gemstones it is a comprehensive guide for anyone wishing to obtain a general knowledge of the subject and to understand the field in its historical context. We are republishing these classic works in affordable, high quality, modern editions, using the original text and artwork.

Download or read book Artificial Gemstones written by Michael O'Donoghue and published by Robert Hale. This book was released on 2007-11-30 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt: This title is now in paperback for the first time.Artificial gemstones have been well established in the trade for some time, but now, following further refinements in their manufacture, gemmologists worldwide are facing increasing problems with identification.Today, gem-quality synthetic diamonds, once deemed impossible to produce, are becoming widely available, and, moreover, it is possible to create almost any major gemstone in whatever colour is desired. Then, too, the growth of diamonds by chemical vapour deposition is destined to present further problems. The synthetic products of the past, particularly of the 1960s, are still available, and are puzzling the newer generations of gemmologists who have not encountered them previously.In "Artificial Gemstones", Michael O'Donoghue provides the definitive guide to the various manmade substitutes thus enabling anyone handling gems to identify them accurately. Starting with the theory of synthetic gem manufacture and an explanation of the production methods used for growing and/or improving crystals - with their ornamental application - the book moves on to list and identify the materials themselves. Some of these have natural counterparts; others are new minerals and do not occur in nature. The author lists the identifying internal and external features and tests, and the book contains colour illustrations to display the inclusions found in transparent materials. The book is completed by an extensive bibliography and a useful appendix of trade names.Gemmologists, gem dealers, lapidaries, curators, amateurs and students of gemmology and mineralogy will all find this an indispensable addition to their bookshelves.

Download or read book Gemstones of the World written by Walter Schumann and published by Sterling Publishing Company, Inc.. This book was released on 2009 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Gemstones of the World" is an essential resource for every hobbyist, jeweler, or jewelry maker. More than 1,500 full-color photos showcase each precious and semiprecious stone in its rough, natural, polished, and cut renditions.

Download or read book Economic Geology and the Bulletin of the Society of Economic Geologists written by and published by . This book was released on 1927 with total page 534 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Economic Geology written by and published by . This book was released on 1927 with total page 930 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Sasol First Field Guide to Gemstones of Southern Africa written by Bruce Cairncross and published by Penguin Random House South Africa. This book was released on 2011-12-02 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sasol First Field Guide to Gemstones of Southern Africa is a fascinating guide to the gemstones of the region. Full-colour photographs and easy-to-read text will help the beginner and budding naturalist to identify the more common gemstones that occur in southern Africa, discover where they are found, and learn about their unusual features.

Download or read book Scientific Investigation of Copies, Fakes and Forgeries written by Paul Craddock and published by Taylor & Francis. This book was released on 2009-02-04 with total page 642 pages. Available in PDF, EPUB and Kindle. Book excerpt: The faking and forgery of works of art and antiquities is probably now more extensive than ever before. The frauds are aided by new technologies, from ink jet printers to epoxy resins, and driven by the astronomic prices realised on the global market. This book aims to provide a comprehensive survey of the subject over a wide range of materials, emphasising how the fakes and forgeries are produced and how they may be detected by technical and scientific examination. The subject is exemplified by numerous case studies, some turning out not to be as conclusive as is sometimes believed. The book is aimed at those likely to have a serious interest in these investigations, be they curator, collector, conservator or scientist. Paul Craddock has recently retired from the Department of Conservation, Documentation and Science at the British Museum, where he was a materials scientist.