gemmological instruments their use and principles of operation

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Gemmological Instruments

Author : Peter G Read
ISBN : 9781483192260
Genre : Science
File Size : 56. 14 MB
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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.

Gemmology

Author : Peter Read
ISBN : 9781136000102
Genre : Art
File Size : 61. 57 MB
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This second edition 'Gemmology' has been expanded and updated throughout by the well known writer and editor of Butterworth-Heinemann's gemmology series, Peter Read. This is a much needed update of a classic text and new syllabus information and sample examination theory papers for the Gemmological Association's Preliminary and Diploma courses are included. The additions also incorporate more recent developments, such as the introduction of synthetic moissanite and the De Beer's instruments for distinguishing between natural and synthetic diamonds. 'Gemmology' still serves as a useful reference guide for gemmologists detailing the latest natural and synthetic gem materials and is an invaluable text for anyone in the gemmological profession.

Beginner S Guide To Gemmology

Author : Peter G Read
ISBN : 9781483183121
Genre : Nature
File Size : 52. 57 MB
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Beginner's Guide to Gemmology presents the profiles of the principal gem materials. This book discusses the interesting characteristics of gemstones as the growing consumer market jewelry resulted in increased sales of gem testing instruments. Organized into 12 chapters, this book begins with an overview of the development of the science of gemmology. This text then explains the fundamental qualities necessary in a gem, including color, hardness, specific gravity, crystallography, refractive index, pleochroism, critical angle, luminescence, and absorption spectra. Other chapters consider the organic gem materials, including amber, ivory, coral, tortoiseshell, jet, ebony, and pearl. This book discusses as well the various methods used in the production of man-made gemstones and the commercial use in gem testing. The final chapter deals with the composition of synthetic gemstones. This book is a valuable resource for gemmologists and jewelers. Students who intend to become a qualified gemologist will also find this book extremely useful.

National Union Catalog

Author :
ISBN : UIUC:30112024896273
Genre : Catalogs, Union
File Size : 45. 64 MB
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Includes entries for maps and atlases.

Practical Gemmology A Study Of The Identification Of Gem Stones Pearls And Ornamental Minerals

Author : Robert Webster
ISBN : 9781447498841
Genre : History
File Size : 88. 87 MB
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Here will be found a shortened but complete course in gemmology, following the traditional lines adopted in teaching students at Chelsea Polytechnic in preparation for the Gemmological Association Examinations. This book contains classic material dating back to the 1900s and before. The content has been carefully selected for its interest and relevance to a modern audience.

New Technical Books

Author :
ISBN : UCAL:B4259706
Genre : Science
File Size : 45. 15 MB
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The Diamond Formula

Author : Amanda S. Barnard
ISBN : 0750642440
Genre : Reference
File Size : 67. 7 MB
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'The Diamond Formula' offers the diamond industry and all interested parties a comprehensive text on synthetic diamonds, joining together the research, achievements, theories, experimental and analytical data by recognized experts in the field, while encompassing a gemmological interpretation. The book offers the average gemmologist, gemmological (or mineralogical) student, or interested party, a concise and easy to decipher overview of the synthesis of diamonds to date. Each of the elements and various topics have at some time been the subject of a lengthy and detailed text in their own right and references are used to ensure that the reader can follow up these leads. The text begins with the history of diamond synthesis, and the theories on which much of the early work was based, before discussing the principles on which the modern processes rely. The following chapters cover the advent of success, commercial applications, synthetic diamond products, producers, gemmological properties and identification of synthetic diamonds. The final section discusses briefly diamond synthesis by CVD and application for this technology. Comprehensive text for a wide market Easy to decipher overview of the synthesis of diamonds Detailed reference section for follow up work

The Journal Of Gemmology

Author :
ISBN : UOM:39015053955897
Genre : Precious stones
File Size : 57. 36 MB
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Vols. for July 1964 include Proceedings of the Gemmological Association of Great Britain.

The Gemmologist

Author :
ISBN : UOM:39015006842143
Genre : Crafts & Hobbies
File Size : 61. 27 MB
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Practical Gemmology

Author : Robert Webster
ISBN : UOM:39015062957108
Genre : Gems
File Size : 31. 16 MB
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