Guide to Gems - (Firefly Pocket) by Oldershaw (Paperback)
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<p/><br></br><p><b> About the Book </b></p></br></br>A guide to the identification, structure, and uses of precious and semi-precious stones, novelty stones, agates, and crystals.<p/><br></br><p><b> Book Synopsis </b></p></br></br><p> <i>A reference guide to gems, semi-precious stones and crystals.</i> </p><p> Gemstones and crystals are used for jewelry, industry, lasers and precision technology. <b>Firefly Guide to Gems</b> is a practical, compact guide to the identification and use of precious and semi-precious stones, novelty stones, agates and crystals. </p><p> An introduction explains geology, chemistry and gemstone properties in clear and accessible terms. Key aspects of gemstones are explained such as crystal structures and optical and physical properties. </p><p> The first section of the book focuses on precious gems in their many forms, with illustrations of priceless jewelry. Practical information includes: <ul> <li>Fashioning and cutting</li> <li>Types and shapes of cut</li> <li>Collecting</li> <li>Handling and storing gemstones</li> <li>Weighing and measuring stones</li> </ul></p><p> The second and main section supplies complete descriptions of a wide range of gems, organized by chemical composition, for instance: <ul> <li>Carbon (diamond)</li> <li>Aluminum oxide (saphire and ruby)</li> <li>Phosphate (turquoise)</li> <li>Silica (opal)</li> </ul></p><p> A fascinating profile of each gem is accompanied with color photographs of the raw crystal, common cuts, and finally polished for use in jewelry. At-a-glance charts provide technical details such as refractive index, crystal group, luster, hardness and cleavage for each gem. </p><p> Easy-to-read and abundantly illustrated, <b>Firefly Guide to Gems</b> is ideal for collectors and rockhounds. </p><p/><br></br><p><b> Review Quotes </b></p></br></br><br>A little gem in itself, this guide is rich in information... A valuable reference guide.-- (05/15/2004)<br><br>Concise but thorough... a wealth of information... outstanding color photographs, computer graphics, diagrams, and charts.-- (06/01/2004)<br><br>Makes the grade... a clear introduction to the classification of rocks and basic crystal structure... excellent section of gem descriptions.-- (05/12/2004)<br><br>Small but informative, handsome, and richly illustrated book... well-written and well-illustrated... highly recommended.-- (07/01/2004)<br><br>This expert knows his material expertly and provides an intriguing and colorful look at the world of gemstones... a gem of a guide.-- (07/01/2004)<br><br>This book is so informative, so inclusive, and so beautifully designed that it should find a place in every high school library.--Rayna Patton"VOYA" (06/01/2004)<br><p/><br></br><p><b> About the Author </b></p></br></br><p> <b>Cally Oldershaw</b> is a mineralogist and Liaison Officer for the Geological Society of London as well as an examiner for the Gemmological Association of Great Britain. </p>
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