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Author: Robert Webster
Publisher: Van Nostrand Reinhold Company
ISBN:
Category : Precious stones
Languages : en
Pages : 264
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Book Description
Author: Robert Webster
Publisher: Van Nostrand Reinhold Company
ISBN:
Category : Precious stones
Languages : en
Pages : 264
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Book Description
Author: Robert Webster
Publisher:
ISBN:
Category : Gems
Languages : en
Pages : 244
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Book Description
Author: Robert Webster
Publisher:
ISBN: 9780719800016
Category : Gems
Languages : en
Pages : 235
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Book Description
Author: R. Webster
Publisher:
ISBN:
Category :
Languages : en
Pages : 235
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Book Description
Author: Robert Webster
Publisher: Harrison Press
ISBN: 1446527921
Category : Antiques & Collectibles
Languages : en
Pages : 164
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Book Description
This scarce text constitutes a comprehensive handbook for practising gemmologists, timeless in its informative value and the perfect compendium for anyone interested in the subject. Gemmology is the science of natural and artificial gems and gemstones, and this book deals primarily with the methodology and techniques used in the classification thereof. Chapters contained within this fascinating text include: Colour, Colour Filter, Composite Stones, Diamond Size Gauge, Dispersion, Forms used in Fashioning, Hardness, Manufactured Gems, Specific Gravity, and many more. This text is prefaced with a detailed forward by L. J. Spencer, who was President of the Mineralogical Society, editor of Mineralogical Magazine, Keeper of Minerals in the British Museum of Natural History, and honorary Life Fellow of the Mineralogical Society of America. The Gemmologist's Pocket Compendium was originally published in 1937 and is proudly republished here with a new prefatory introduction of the topic."
![The Gemmologists' Compendium, Etc. [With Diagrams and a Map.]. PDF](https://books.google.com/books/content/images/frontcover/MjAazgEACAAJ?fife=w80-h100)
Author: Robert Webster (F.G.A.)
Publisher:
ISBN:
Category :
Languages : en
Pages : 228
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Book Description
Author: Peter G Read
Publisher: Elsevier
ISBN: 1483183122
Category : Nature
Languages : en
Pages : 241
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Book Description
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.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 926
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Book Description
![The Gemmologists' Compendium. Third Edition. [With Plates.]. PDF](https://books.google.com/books/content/images/frontcover/n6AFMwEACAAJ?fife=w80-h100)
Author: Robert Webster
Publisher:
ISBN:
Category :
Languages : en
Pages : 228
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Book Description
Author: Antoinette Matlins
Publisher: Turner Publishing Company
ISBN: 0943763932
Category : Antiques & Collectibles
Languages : en
Pages : 467
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Book Description
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.
