Author: Trevor Linton
Publisher:
ISBN: 9780646037523
Category : Precious stones
Languages : en
Pages : 144

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Book Description

Author: Peter G Read
Publisher: Elsevier
ISBN: 1483192261
Category : Science
Languages : en
Pages : 341

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Book Description
Gemmological Instruments deals with the developments in diamond grading equipment and gem testing instruments since the publication of the first edition in 1978. These developments include improvements in the versatility and styling of existing instruments such as the reflectivity meter, the composite spectroscope, and the refractometer. It also addresses the criticisms in the first edition and provides a discussion of the advantages and disadvantages of different gem testing equipment. This book is organized into 16 chapters that describe groundbreaking instruments like the thermal conductivity diamond testers and home-constructed items that while innovative have not yet been commercialized. There are also chapters dealing with microphotography and identification of synthetics and stimulants. This book also provides a listing of gemstone constants and characteristic inclusions in natural and synthetic gemstones. This book will be of interest to people interested in equipment for gem testing and diamond grading.

Author: Trevor Linton
Publisher:
ISBN: 9780646341262
Category : Precious stones
Languages : en
Pages : 85

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Book Description

Author: W. William Hanneman
Publisher:
ISBN: 9780966906301
Category : Mineralogy
Languages : en
Pages : 172

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Book Description

Author:
Publisher:
ISBN:
Category : Precious stones
Languages : en
Pages : 552

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Book Description
Vols. for July 1964 include Proceedings of the Gemmological Association of Great Britain.

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: 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: Robert Webster
Publisher: Sterling Publishing (NY)
ISBN: 9780806930787
Category : Nature
Languages : en
Pages : 142

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Book Description

Author: Tom Herbst
Publisher: Facetable Books
ISBN: 9783000474743
Category : Gem cutting
Languages : en
Pages : 428

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Book Description
Amateur faceter Tom Herbst lays out the steps necessary to transform a shapeless lump of rock into a glittering jewel that is unique and valuable. Along the way, he explains not only the "how" but also the "why," and provides helpful tips in dealing with many of the pitfalls that confront the beginning gem cutter.

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.