Author: Walter Schumann

Publisher: Sterling Publishing Company, Inc.

ISBN: 9781402768293

Category: Nature

Page: 319

View: 3305

Provides detailed information regarding the physical characteristics and unique traits of more than 1,800 precious and semiprecious stones, as well as discussing gemstone structure, production, name origin, and symbolism.
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Author: Walter Schumann

Publisher: Sterling Publishing Company, Inc.

ISBN: 9781402740169

Category: Nature

Page: 311

View: 8415

More than 1,500 full-color illustrations of all types of gemstones and hundreds of semi-precious stones accompany guidelines for identification and classification and articles on mining, cutting, and the properties and characteristics of each, in this newly updated edition.
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Author: Walter Schumann

Publisher: Houghton Mifflin Harcourt

ISBN: 9780395511374

Category: Nature

Page: 380

View: 5242

Shows and describes different kinds of rocks and minerals, and tells how to identify rocks by testing for hardness, streak color, and density
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Author: Walter Schumann

Publisher: Sterling Publishing Company, Inc.

ISBN: 140275339X

Category: Nature

Page: 232

View: 9907

It’s the classic work: revised and updated! Identify over 500 of the most collectible minerals quickly and easily with this fully photographed field guide. And this new reissue makes identification easier, with new cleavability ratings for each entry alongside the handy classifications based on streak color, Mohs’ hardness, and specific gravity. A complete introductory discussion of mineral forms and properties explains the essential criteria for recognition, and each of the hundreds of minerals (from Ankerite to Zinwaldite) is accompanied by information on its fracture, luster, chemical formula, aggregates, distinguishing characteristics, and localities.
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Gem

The Definitive Visual Guide

Author: DK

Publisher: Penguin

ISBN: 1465462120

Category: Antiques & Collectibles

Page: 440

View: 8042

Gem is a dazzling visual guide to precious stones, organic gems, and precious metals that weaves together beautiful, specially commissioned images and science, natural history, mythology, and true stories of adventure and discovery. From diamonds to sapphires to limestone, this comprehensive guide profiles all the key gemstones and other precious materials, and stunning images show the jewels in their different cuts, colors, and uses. The stories, myths, and legends that surround the most celebrated gems and jewel-laden artifacts from around the world are revealed, from their journeys in the company of royalty, film stars, and thieves to the curse of the Hope Diamond. Additionally, a reference section at the end of the book highlights a variety of other rocks and non-precious stones. Created in association with the Smithsonian Institution, Gem combines stunning photographs with expert knowledge, making it perfect for gift giving.
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Author: Paul Deasy

Publisher: Real Gems Llc

ISBN: 9780982115602

Category: Science

Page: 207

View: 3173

Provides a concise description of each gemstone, photographs showing characteristics and distinguishing features, and information on where gemstones are found and their natural properties.
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A Hands-on Guide to More Confident Buying & Selling

Author: Antoinette Leonard Matlins,Antonio C. Bonanno

Publisher: Gemstone Press

ISBN: 0943763592

Category: Antiques & Collectibles

Page: 354

View: 3644

This revised edition covers the latest gems, synthetics, treatments and instruments. It is easy to use, practical and non-technical indicating how to identify diamonds, coloured gemstones and pearls, as well as separating them from fakes and look-alikes. The book explains what instruments are needed and how to use them, where to obtain such instruments and what should be seen for each gemstone. Anyone can learn to identify most of the gems and imitations found in the market place. This volume is the key to avoiding costly mistakes and recognising profitable opportunities.
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A Complete Color Reference for Precious and Semiprecious Stones of the World

Author: Karen Hurrell,Mary L. Johnson

Publisher: Chartwell Books

ISBN: 0785834982

Category: Nature

Page: 320

View: 5643

This fascinating work provides a truly stunning visual guide to the beautiful world of gemstones. It brings together a wealth of information in clearly worded text accompanied by a dazzling collection of color photographs showing gems in their natural and cut states. From subjects as diverse as identifying and collecting minerals and advanced testing, to ethical sourcing of gems, every aspect of gemstones is covered, and is presented with a wealth of research in easy-to-understand sections, making it a must-have reference work for anyone who wants to delve into the exciting world of gems.
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A Lively Guide for the Casual Collector

Author: Daniel J. Dennis

Publisher: Harry N. Abrams

ISBN: 9780810941267

Category: Science

Page: 192

View: 5085

Provides information on colored gems and diamonds, including things to be aware of before buying a precious stone such as color, cut, and setting.
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Author: Cally Oldershaw

Publisher: Firefly Books

ISBN: 9781552978146

Category: Crafts & Hobbies

Page: 224

View: 8527

A guide to gems and precious stones covers such topics as gem formation, structural properties, fashioning and cutting, and gem classification.
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Author: Cornelius S. Hurlbut,Robert C. Kammerling

Publisher: John Wiley & Sons

ISBN: 9780471526674

Category: Science

Page: 336

View: 3229

This edition has been revised and expanded to reflect recent and varied developments in the highly specialized field of gemology. Among these are: gemstone synthesis; imitation gems; the alteration of gems to improve, add, remove or otherwise change their color, phenomena or clarity; the importance and widespread uses of the microscope to reflect the aforementioned developments; and a number of new gem minerals or new forms of previously described minerals recently discovered or actively marketed for the first time. The chapter on Descriptive Gemology has been divided into two groups: important gemstones (those gem materials most widely used in jewelry and ornamental objects) and less important gemstones (those less commonly encountered).
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Author: Joel E. Arem

Publisher: N.A

ISBN: 9780412989117

Category: Science

Page: 248

View: 3140

Provides information on all known gemstone species and varieties, discussing physical properties, occurrence, chemistry, availability, rarity, and market potential, and includes complete data on synthetic gems
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Understanding, Identifying, Buying

Author: Keith Wallis (F.G.A.)

Publisher: ACC Distribution

ISBN: 9781851496303

Category: Antiques & Collectibles

Page: 160

View: 555

Whether buying gem-set jewellery or loose stones, you will be faced with a colourful array of beauty
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Symbols of Beauty and Power

Author: Eduard Josef Gübelin,Franz Xaver Erni

Publisher: Gem Guides Book Company

ISBN: 9780945005360

Category: Science

Page: 240

View: 2969

Over 500 jewelry, artworks, gemstones, museum pieces showcased! From agates and beryl to tourmaline and zircon. Ideal reference book and an exciting read on gemstones. Contains sections on collecting, cutting, polishing, famous jewels, zodiac gemstones, and the magic and medicinal properties of gemstones. Written by a renowned gemologist.
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Author: Cally Oldershaw

Publisher: Firefly Books

ISBN: 9780228100072

Category:

Page: 256

View: 4084

-Lavishly illustrated, Gems of the World is intended for anyone who has ever been fascinated by crystals, jewelry, and gems, from general readers to seasoned professionals. It is a fine addition to general collections.- --Booklist, on the previous edition Gems of the World is a practical and comprehensive guide to the identification and properties of precious and semiprecious gems, novelty stones, agates and crystals. This edition has been revised and thoroughly updated. Changes and new features include updated maps of recently established diamond bourses and geographical country changes, plus new gem varieties and localities where they are found, new techniques for producing synthetic gemstones and simulants, and much more. There is comprehensive information on gems: gem formation mining the diamond industry conflict diamonds ethical sourcing crystal structure (diagrams and cuts) optical and physical properties fashioning and cutting (properties and uses) gemstone cuts for diamonds buying a diamond buying colored gemstones imitation and synthetic gemstones gemstone enhancement history of gems famous diamonds caring for gemstones and jewelry a color key of 139 gemstones. The text describes the world's diamond cutting and trading centers, the -diamond pipeline- that flows from mine to retail, and information on the gemstone industry, ethical mining, conflict diamonds and the emergence of new diamond centers. The description directory of gemstones is organized by their chemical composition. The 139 profiles describe each gem's geology, chemistry, properties (such as color, refractive index, and luster), cultural use in history and its value in jewelry. Photographs show the gem as a raw crystal, in common cuts, polished for use, and in some cases, also in a piece of jewelry. Gems of the World is an ideal reference for gemologists, collectors and general readers.
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Author: P. G. Read

Publisher: Elsevier

ISBN: 1483144674

Category: Nature

Page: 370

View: 2499

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.
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Author: Cally Hall

Publisher: N.A

ISBN: 9781405357975

Category: Gems

Page: 160

View: 1128

A new edition of the clearest, most authoritative guide to gemstones you will find. From Amber to Rubellite, discover over 130 varieties of cut and uncut stones, organic gemstones and precious metals. 800 incredible photos, precise annotations and detailed descriptions, including everything from gemstone shapes to their composition, will help you to identify different stones quickly and easily. Covers everything from what a gemstone is and where they occur to the natural properties they have and how they have been fashioned and imitated through the ages. Perfect for gemstone lovers and a comprehensive guide for collectors.
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Author: Michael O'Donoghue,Louise Joyner

Publisher: Robert Hale & Company

ISBN: 9780719803512

Category: Science

Page: 313

View: 759

Identification of Gemstones is a comprehensive reference guide to gem and ornamental materials, and outlines all the features a gem tester has to know before making an identification. The experienced author team describe not only each natural gem species, but also their synthetic counterparts and the materials used as imitations, demonstrating how to avoid costly mistakes. End of chapter summaries, details of further reading, and the companion website combine to provide all the support needed by professional gemmologists, antique and gemstone dealers, jewelers, and students.
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