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Hardcover Publisher: Gemological Inst of Amer (June 1987) Language: English ISBN-10: 0873110129 ISBN-13: 978-0873110129 Product Dimensions: 9 x 6.9 x 0.9 inches Shipping Weight: 1.9 pounds

Third edition of this industry standard for gemologists

Practical Gemmology has for decades been recognized as the standard work for those learning how to identify gems and ornamental minerals. It is recommended by educational authorities as a course textbook, and it is also particularly suitable as a self-instructor for those entering or hoping to advance in the jewellery and gem trades, or for the keen amateur. The 21 sections comprise notes on the formation of gem materials, and a section on luminescence and electrical effects bring a more modern approach to this part of the subject. More information is given on the inclusions seen in gemstones, and the newer synthetic stones are discussed. The methods used in cutting gemstones and details of more of the unusual gemstones now cut and polished are also discussed.

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.

Contents: Setting Up a Basic Lab; Proper Lighting; How to Use Each Instrument & What It Will Show; Major Errors and How to Correct Them, and more. Appendixes: Charts & Tables of Gemstone Properties, Schools, Laboratories, Associations and Publications, Readings. Glossary. Index.

Hardcover Publisher: Gemological Inst of Amer (June 1987) Language: English ISBN-10: 0873110129 ISBN-13: 978-0873110129 Product Dimensions: 9 x 6.9 x 0.9 inches Shipping Weight: 1.9 pounds

Gem Identification Made Easy is the first and only book that explains in non-technical terms how to identify diamonds and colored gems, and how to separate natural gems from imitations, treated stones, synthetics, and look-alikes. The book's approach is direct and practical, and its style easy to understand. In fact, with this highly accessible guide, anyone can begin to master gem identification. Includes over 150 photographs and illustrationsover 80 in full color!Using a simple, step-by-step system, the authors explain how to properly use essential but uncomplicated instruments to identify stones, what to look for gemstone by gemstone, and how to set up a basic lab at modest cost. Three of the instruments are inexpensive, portable, pocket instruments that, when used together, can identify almost 85% of all precious and popular stones.The key to avoiding costly mistakes and recognizing profitable opportunities is knowing both what to look for and what to look out for.Gem Identification Made Easy will help you:Open your eyes to the types of treatments, imitations, synthetics, look-alikes, and fakes in the gem market today.Learn how to tell the difference between them. Quickly spot:Synthetics, including synthetic emeralds and diamondsFilled diamondsDiffused "blue" sapphires and "red" rubiesHPHT-treated diamonds... and much more!Determine how to spot the newest "composite" imitations.Learn how to identify recently discovered gems such as “Mandarin” garnet, red “emerald,” and North Carolina's chromium-rich emeralds.Discover new treatments such as surface coatings to create “fancy color” diamonds and improve or change the color of many gemstones.Know when to seek help from a professional gemologist or lab.Become more professional in your business or hobby.

Since it was first published in 1962 `Gems', written by Robert Webster and revised in its fourth edition by Basil Anderson, has become universally recognised as the most comprehensive and authoritative treatise on gem materials in the English language. In this fifth edition, edited by Peter Read, the forty chapters, appendices and tables have been revised by fifteen gemmologists chosen for their expertise in the relevant sections. Aimed at the professional jeweller and student gemmologist, Gems also caters for the collector of gems and the layperson who is interested in precious stones.

Since it was first published in 1962 'Gems' has become universally recognised as the most comprehensive and authoritative treatise on gem materials in the English language. This sixth edition, has been revised for relevance to today's practice and includes an expanded encyclopedic section.'Gems' caters for the professional jeweller and student gemmologist, collector of gems and those with an insatiable interest in precious stones. * Descriptive account of all gem materials used as ornament, along with their synthetic counterparts * Contributing authors, at the top of the field, bring the latest developments to the reader* The only encyclopedic reference for gemstones

New, revised, expanded edition of the first and only book of its kind. Covers the latest gems, synthetics, treatments, and instruments. Easy to use. Practical. Non-technical. Shows how to identify diamonds, colored gemstones, and pearls, and separate them from fakes and look-alikes. Explains what instruments are needed, how to use them, where to get them, and what should be seen for each gemstone.No science background necessary.Faster than you can imagine, anyone can learn to identify most of the gems and imitations found in the marketplace. This practical volume is the key to avoiding costly mistakes and recognizing profitable opportunities. Essential reading for collectors, investors, jewelry lovers, hobbyists, jewelers, antique dealers, and gemology students. With this highly accessible guide, anyone can begin to master gem identification.Selected Contents:Setting up a basic lab.Description of Each Instrument: What It Will Show & How to Use It.Dark Field Loupe - Synthetic Emerald Filters - Immersion Cell - Synthetic Diamond Detector - Loupe - Chelsea Filter - Electronic Diamond Tester - Refractometer - Ultraviolet Lamp - Microscope - Spectroscope - Polariscope - DichroscopeWhat to Look For, Gem by GemAntique & Estate Jewelry - The True Test for the Gem Detective.Dyeing - Composite Stones - Foil Backing - SubstitutionsAppendices: Charts and Tables of Gemstone Properties, Schools, Laboratories, and more.

Since it was first published in 1962 `Gems', written by Robert Webster and revised in its fourth edition by Basil Anderson, has become universally recognised as the most comprehensive and authoritative treatise on gem materials in the English language. In this fifth edition, edited by Peter Read, the forty chapters, appendices and tables have been revised by fifteen gemmologists chosen for their expertise in the relevant sections. Aimed at the professional jeweller and student gemmologist, Gems also caters for the collector of gems and the layperson who is interested in precious stones.

Unlike the dense and highly technical academic tomes that are text-heavy, poorly organized and intimidating, this colorful and easy-to-use reference guide dedicated to collecting rocks, gems and minerals is ideal for readers who want to expand their understanding without getting lost in a labyrinth of science.Features:700 beautiful color pictures, the book’s easy-to-use, quick reference format is arranged by category and color of stone for simple identification of all your findsInclude values, making it perfect for those who wish to simply build their collections with purchases rather than in the fieldCovers both lapidary and mineral display materials, is recognized as one of the leading agate collectors in the worldAbout the Author:Author Patti Polk is recognized as one of the top agate collectors in the world (as noted in the highly respected reference book Agates III by Johann Zenz). She has been collecting, cutting and polishing rocks for jewelry and display for more than 20

Since it was first published in 1962 `Gems', written by Robert Webster and revised in its fourth edition by Basil Anderson, has become universally recognised as the most comprehensive and authoritative treatise on gem materials in the English language. In this fifth edition, edited by Peter Read, the forty chapters, appendices and tables have been revised by fifteen gemmologists chosen for their expertise in the relevant sections. Aimed at the professional jeweller and student gemmologist, Gems also caters for the collector of gems and the layperson who is interested in precious stones.

Gem Identification Made Easy is the first and only book that explains in non-technical terms how to identify diamonds and colored gems, and how to separate natural gems from imitations, treated stones, synthetics, and look-alikes. The books approach is direct and practical, and its style easy to understand. In fact, with this highly accessible guide, anyone can begin to master gem identification.Using a simple, step-by-step system, the authors explain how to properly use essential but uncomplicated instruments to identify stones, what to look for gemstone by gemstone, and how to set up a basic lab at modest cost. Three of the instruments are inexpensive, portable, pocket instruments that, when used together, can identify almost 85% of all precious and popular stones.The key to avoiding costly mistakes and recognizing profitable opportunities is knowing both what to look for and what to look out for.Gem Identification Made Easy will help you:Open your eyes to the types of treatments, imitations, synthetics, look-alikes, and fakes in the gem market today. Learn how to tell the difference between them. Quickly spot: Synthetics, including synthetic emeralds and diamonds Filled diamonds Diffused blue sapphires and red rubies HPHT-treated diamonds ... and much more! Determine how to spot the newest composite imitations. Learn how to identify recently discovered gems such as Mandarin garnet, red emerald, and North Carolinas chromium-rich emeralds. Discover new treatments such as surface coatings to create fancy color diamonds and improve or change the color of many gemstones. Know when to seek help from a professional gemologist or lab. Become more professional in your business or hobby.

Acceptable/Fair condition. Book is worn, but the pages are complete, and the text is legible. Has wear to binding and pages, may be ex-library. 0.55

Three Guides in One! Identification, Values, Lapidary UsesDesigned with beginners in mind, yet filled with valuable technical information for advanced collectors,Collecting Rocks, Gems and Minerals takes you from being just someone who appreciates rocks to a true "collector."Easy-to-use, quick reference format arranged by category and color of stoneCovers both lapidary and mineral display materialsProvides values and tips for locating, buying and collectingIncludes organics such as amber, bone, coral, pearl and shellLists chemical group, system, hardness, opacity, fracture, specific gravity and moreContains more than 650 full-color photosForeword by Johann Zenz, world renowned agate expert, author and lecturer

Practical Gemmology has for decades been recognized as the standard work for those learning how to identify gems and ornamental minerals. It is recommended by educational authorities as a course textbook, and it is also particularly suitable as a self-instructor for those entering or hoping to advance in the jewellery and gem trades, or for the keen amateur. The 21 sections comprise notes on the formation of gem materials, and a section on luminescence and electrical effects bring a more modern approach to this part of the subject. More information is given on the inclusions seen in gemstones, and the newer synthetic stones are discussed. The methods used in cutting gemstones and details of more of the unusual gemstones now cut and polished are also discussed.

256 Pages. The Gemstones Handbook is a comprehensive and authoritative guide to the world of precious gems and ornamental stones. Features over 200 mineral gems, organics and synthetics. Clear, concise and user-friendly. Includes background information on crystal structures and rock types. Stunning photos and precise diagrams allow for easy identification. Each entry features an easy-reference table of properties, which include hardness, cleavage and fracture. A beautiful, top quality book! PART 1: The World of Gemstones. The APpeal of Gemstones, Basic Rock Types, Principles of Rock Formation and Physical Properties. PART 2: A Gemstone Guide. Encyclopedic Section with information on origins, properties and qualities of over 200 stones as well as major world sources. PART 3: The Art of the Gem. The History and Popularity of Collecting. Cutting and Finishing Processes.

A comprehensive reference guide to gem and ornamental materials, this book deals with each gem species, outlining 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 potentially costly mistakes.End of chapter summaries, details of further reading, and the companion web site combine to provide all the support needed by professional gemmologists, antique and gemstone dealers, jewellers and students. * Learn how to put the theory of identification into practice with this accessible guide* 60 full colour photographs to illustrate identifying features* Chapter summaries and companion website support provide easy understanding and reference

Detailed maps and descriptive text lead the rockhound to over 82 of the best collecting locales for gems, minerals, and fossils. Numerous black and white photos aid in locating the collecting area and color photos help with specimen identification. Includes a handy mineral locator index, glossary and helpful contact information.