Author: Walter Schumann

Publisher: Sterling Publishing Company, Inc.

ISBN: 9781402768293

Category: Nature

Page: 319

View: 3908

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: Houghton Mifflin Harcourt

ISBN: 9780395511374

Category: Nature

Page: 380

View: 819

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: 3975

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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Timeless Natural Beauty of the Mineral World

Author: Lance Grande,Allison Augustyn

Publisher: University of Chicago Press

ISBN: 0226305112

Category: Nature

Page: 369

View: 6678

"Gems and Gemstones" features nearly 300 color images of cut gems, precious and semiprecious stones, gem-quality mineral specimens, and fine jewelry to be unveiled in the new Grainger Hall of Gems at the Field Museum in Chicago.
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Author: Cally Oldershaw

Publisher: Firefly Books

ISBN: 9780228100072

Category:

Page: 256

View: 8430

-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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Understanding, Identifying, Buying

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

Publisher: ACC Distribution

ISBN: 9781851496303

Category: Antiques & Collectibles

Page: 160

View: 5011

Whether buying gem-set jewellery or loose stones, you will be faced with a colourful array of beauty
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The Connoisseur's Guide to Precious Gemstones

Author: Richard Wise

Publisher: Brunswick House, Csi

ISBN: 9780972822329

Category:

Page: 340

View: 6705

Completely revised and expanded with 10 new chapters: Jade / Demantoid Garnet / Natural Nacreous Pearls / Conch Pearls / Sunstone / Moonstone / Peridot / Cobalt Blue Spinel / Red -Pink Spinel / Golconda (Type IIa) Diamonds. Five new introductory essay: Blue-white diamonds / Jadeite / Natural Pearls / Spinel / Feldspars. Plus 165 color photographs (50 additional) which include exclusive images from major museum collections and the latest auction market icons. The definitive book for anyone wanting to learn how the best gemologists in the world evaluate precious gems, and what makes one stone merely a good stone versus a truly fabulous museum quality gem. The author, Richard Wise, is one of the world's foremost gemologists.
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Author: Joel E. Arem

Publisher: N.A

ISBN: 9780412989117

Category: Science

Page: 248

View: 7010

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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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: 5455

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: 4951

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 Hall

Publisher: N.A

ISBN: 9781405357975

Category: Gems

Page: 160

View: 9169

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: P. G. Read

Publisher: Elsevier

ISBN: 1483144674

Category: Nature

Page: 370

View: 6435

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: Kennie Lyman

Publisher: Touchstone

ISBN: 9780671604301

Category: Nature

Page: 384

View: 4677

Simon & Schuster's Guide to Gems and Precious Stones provides both the connoisseur and the casual collector with a compact, easy-to-use volume describing more than 100 rare varieties of minerals whose beauty and mystery have possessed our imaginations from time immemorial. More than 450 brilliant photographs accompany profiles of each gem, covering such aspects as appearance, physical properties -- density, hardness, refraction -- occurrence, and how to judge quality and value. Additional sections describe the process of cutting gemstones and the techniques professional gemologists use to evaluate a stone's weight and optical properties. Detailed and comprehensive, this book is essential for anyone interested in the study of gems and precious stones.
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A Celebration of Earth's Treasures

Author: DK

Publisher: Dorling Kindersley Ltd

ISBN: 0241296390

Category: Antiques & Collectibles

Page: 360

View: 4574

Celebrate the most dazzling jewels on Earth with Jewel, the most glamorous guide to jewellery, gems, and minerals. Jewel is a lavish look at precious stones, organic gems, and precious metals. Discover gemstones from agate to zoisite, take an up-close look at the world's most extravagant and famous jewellery, and immerse yourself in the incredible stories behind famous gems including the stunning Koh-i-Noor, the exquisite Fabergé eggs, and the mysterious Hope diamond. Packed with spectacular photography, intriguing history, and fascinating real-life stories, Jewel is the most sumptuous celebration of the treasures of the Earth and the perfect gift for anyone looking for a little glamour.
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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: 2243

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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Identification, Values and Lapidary Uses

Author: Patti Polk

Publisher: N.A

ISBN: 9781440246159

Category: Gems

Page: 352

View: 8685

Arranged by category and color of stone, provides values and tips for identifying, locating, buying, and collecting rocks, gems, and minerals.
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Author: Cally Oldershaw

Publisher: N.A

ISBN: 9780540083893

Category: Crystals

Page: 224

View: 2495

An important feature of the book is a comprehensive visual identification key. This makes it easy for the reader to recognize the type of a stone, and so move on to the correct section of the book for a detailed identification. The main part of the book examines each major group of gems from every part of the world, with each group divided into clearly structured units. The first section deals with precious gems in their many forms, with illustrations of priceless jewellery. The second and longer section concentrates on the semiprecious and novelty stones, the agates and the crystals used aby many professional and amateur jewellers and purchased by the majority of collectors and jewellery enthusiasts.
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