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Author: Basil William Anderson
Publisher: Gemstone Press
ISBN:
Category : Antiques & Collectibles
Languages : en
Pages : 280
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Book Description
Contents include the history and development of spectroscopy; a discussion of the nature of absorption spectra and the absorption spectra of solids and gem minerals; the many uses of the spectroscope and the spectrophotometer; light sources and the causes of color; absorption in synthetic gemstones; and more. Written for gemologists everywhere and incorporating the latest developments, The Spectroscope and Gemmology is an indispensable textbook for professional and amateur gemologists and students of gemology.
Author: Basil William Anderson
Publisher: Gemstone Press
ISBN:
Category : Antiques & Collectibles
Languages : en
Pages : 280
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Book Description
Contents include the history and development of spectroscopy; a discussion of the nature of absorption spectra and the absorption spectra of solids and gem minerals; the many uses of the spectroscope and the spectrophotometer; light sources and the causes of color; absorption in synthetic gemstones; and more. Written for gemologists everywhere and incorporating the latest developments, The Spectroscope and Gemmology is an indispensable textbook for professional and amateur gemologists and students of gemology.
Author: Peter G. Read
Publisher: Butterworth-Heinemann
ISBN: 0750664495
Category : Design
Languages : en
Pages : 341
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Book Description
This edition has been completely revised to cover the latest methods of gem enhancement and identification, as well as the most up-to-date test instruments and laboratory techniques.
Author: Colin H. Winter
Publisher: Twayne Publishers
ISBN: 9780954485306
Category : Precious stones
Languages : en
Pages : 85
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Book Description
Author: P. G. Read
Publisher: Elsevier
ISBN: 1483144674
Category : Nature
Languages : en
Pages : 375
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Book Description
Gemmology is a text for students preparing for the Gemmological Association's Preliminary and Diploma examinations. The book is more expansive and up-to-date than the author's earlier book, Beginner's Guide to Gemmology. The book deals with the practical and theoretical sides of gemmology. Tracing the background and science of gemmology, the book covers the gem material, geological formation, and occurrence of gemstones on the earth. The composition of gemstones from the atoms, elements, molecules, and compounds comprising them is analyzed, and the relationship between chemical composition and durability of the stone is explained. The basics of crystallography is mentioned as a tool toward understanding gemmology after which cleavage, parting, and fracture are done. A gemstone's durability and hardness and how the latter influences engineering tests and the mining techniques are compared. An important test technique to identify unmounted stones is the measure of specific gravity using displacement measurement methods and hydrostatic methods. After more descriptive details are given in identification of gemstones, whether these are synthetic or simulants, through a comprehensive explanation of the materials found in these other gemstones, the fashioning, through shaping or polishing, of gemstones is explained. Emphasis is given on the critical angle in which light rays pass in different rock densities, and then the cutting styles, gemstone polishing, and grading are discussed. Students studying for the Gemmological Association's Preliminary and Diploma examinations, jewelers, lapidarists, and diamond cutters, as well as those engaged in the hobby of gemmology, will find this book helpful and full of information toward their endeavors and hobbies.
Author: B. Anderson
Publisher: Read Books Ltd
ISBN: 1447494652
Category : Science
Languages : en
Pages : 254
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Book Description
This unusual work is a complete treatise on the identification of precious stones that is thoroughly recommended for inclusion on the jeweller or antiquarian's bookshelf. Contents Include: Preface; How to Use The Book; Refractive Index and its Measurement; Double Refraction and How to Detect it; Colour, Colour Filters and the Dichroscope; Specific Gravity and How to Measure It; Detection of Synthetic and Imitation Stones; The Use of the Microscope; The Identification of Diamond; The Identification of Ruby; The Identification of Sapphire; The Identification of Emerald; Aquamarine and Alexandrite; The Identification of Zircon; The Identification of Topaz; The Identification of Pink, Mauve, etc. Stones; The Identification of Brown and Orange Stones; Quartz, Opal, and Garnets; Tourmaline, Peridot, and Spinel; Identification of Translucent and Opaque Stones; Amber, Tortoiseshell, Coral, and Jet; Pearls: Real, Cultured, and Imitation; Appendix: Glossary, Alphabetical Summary of Gem Species, Crystal Systems, Bibliography, Specific Gravity and Refractive Index Tables; Names and Addresses of Recommended Suppliers; and an Index. Many of the earliest books, particularly those dating back to the 1900s and before, are now extremely scarce and increasingly expensive. We are republishing these classic works in affordable, high quality, modern editions, using the original text and artwork.
Author: Antoinette Matlins
Publisher: Turner Publishing Company
ISBN: 0943763894
Category : Antiques & Collectibles
Languages : en
Pages : 366
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Book Description
one person can accomplish big things.
Author: Cornelius S. Hurlbut
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 304
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Book Description
A concise, systematic, yet comprehensive ``textbook'' treatment of the science. Examines origin, chemistry, crystallography, physical properties, and optical properties of gemstones, and discusses methods and instruments used to determine these properties. Highlights recent advances and important contributions; explores new methods of study and determination, crystal structures, causes of color, new gem minerals, new methods of gem synthesis, manufactured gems, chemical compounds used as substitutes, and imitations and simulations. Includes 12 full color plates, 350 halftones and line drawings, and a Gem Index that lists commonly sought characteristics along with page number references.
Author: Antoinette Matlins
Publisher: Turner Publishing Company
ISBN: 0943763843
Category : Antiques & Collectibles
Languages : en
Pages : 306
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Book Description
Over 400,000 Copies in Print Know What You Want, Know What You’re Buying, Learn the Secrets to Get the Most for Your Money Easy to Read Easy to Understand Practical Complete Instant Answers ... to All Your Questions Completely Updated & Expanded 7th Edition! Purchasing gems and jewelry can be a magical experience, filled with excitement and anticipation. But lack of information, error, or misrepresentation can make the thrill of buying a gem or piece of jewelry confusing, intimidating, overwhelming, and costly. To help you avoid the pitfalls and keep the magic, two internationally respected experts on buying gems and jewelry put their inside knowledge to work for you in this easy-to-read, easy-to-use guide. It is filled with practical advice and is designed to make it easy for you to have all the information you need to buy gems and jewelry with confidence. Recommended by consumer and jewelry trade reviewers around the world, it is already in use in over 100 countries and has been translated into Spanish, Arabic, Greek, Hungarian, Russian and Japanese. Over 400,000 copies are now in print and this revised, updated, expanded edition covers even more: buying and selling on the internet, dazzling new diamond cuts, recently discovered gems ... and new treatments and trickery to look out for. There are fascinating mythical and magical tidbits, and practical tips that could only come from an insider. In simple, straightforward terms you’ll learn about the four Cs and how to juggle them to get what you want, at the price you want to pay; what to look for, and look out for; all about gold and platinum, jewelry design, and some of the country’s leading designers. You’ll learn what questions to ask and what to get in writing, and even how to select the jeweler, appraiser, and insurer. The authors leave no stone unturned to give you everything you need to know—whether you are a novice or a connoisseur. With Jewelry & Gems: The Buying Guide, you’ll find the experience can be a joy, and the gems and jewelry you select a source of lasting pleasure!
Author: Richard W. Hughes
Publisher:
ISBN: 9780964509719
Category :
Languages : en
Pages : 816
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Book Description
From the dawn of time, ruby and sapphire have both attracted and fascinated humans in ways that few other items could.While objects of desire are found throughout the natural world, physical beauty is too often ephemeral. From the allure of a man, woman, flower or butterfly, through the fleeting moments of a sunset, there is little that lasts and practically nothing that can be passed down to our descendants. The exception is precious stones. Not only are they the most durable creations of mother nature, but their visual splendor is truly eternal.In this companion to his 2013 book, Ruby & Sapphire--A Collector's Guide, Richard Hughes examines these gems from the gemological standpoint, delving into these gems not just from the aesthetic, but also from the scientific point of view.The product of nearly 40 years of firsthand experience, it covers every aspect of the subject from A-Z. History, sources, prices, quality analysis, synthetics and treatments, everything is here. Ruby & Sapphire--A Gemologist's Guide represents the most comprehensive book ever written on a single precious stone. With over 1000 photos, maps and illustrations and 3500 references, it is nothing less than a tour-de-force of gemological scholarship.
Author: Antoinette Matlins
Publisher: Turner Publishing Company
ISBN: 0943763932
Category : Antiques & Collectibles
Languages : en
Pages : 467
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Book Description
This colorful book offers you a window into the world of Mahatma Gandhi, one of the most amazing people of the twentieth century. You will learn about Gandhi’s life—from his time as a student in London to his work for equality in South Africa and India—and his methods of peaceful, but not passive, resistance to injustice.
