Magnesite Deposits in the Serra Das Éguas, Brumado Bahia, Brazil PDF Download
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Author: Alfred J. Bodenlos
Publisher:
ISBN:
Category : Brazil
Languages : en
Pages : 104
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Book Description
Author: Alfred J. Bodenlos
Publisher:
ISBN:
Category : Brazil
Languages : en
Pages : 104
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Book Description
Author: Michael O'Donoghue
Publisher:
ISBN: 0750658568
Category : Science
Languages : en
Pages : 937
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Book Description
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.In this sixth edition, chapters, appendices and tables have been revised for relevance to today's practice and include 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. NB: The gem testing section has been removed as this is covered extensively in Gemmology 3e *Unique comprehensive source of information on gems *Contributing authors, at the top of the field, bring the latest developments to the reader *The only encyclopedic reference for gemstones
Author: Edwin Woods Roedder
Publisher:
ISBN:
Category : Geochemistry
Languages : en
Pages : 204
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Book Description
Author: Basil William Anderson
Publisher:
ISBN:
Category : Precious stones
Languages : en
Pages :
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Book Description
Author: Michael O'Donoghue
Publisher: Robert Hale & Company
ISBN: 9780719803512
Category : Science
Languages : en
Pages : 313
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Book Description
Identification of Gemstones is a comprehensive reference guide to gem and ornamental materials, and outlines 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 costly mistakes. End of chapter summaries, details of further reading, and the companion website combine to provide all the support needed by professional gemmologists, antique and gemstone dealers, jewelers, and students.
Author: Iain Balfour
Publisher:
ISBN:
Category : Diamonds
Languages : en
Pages : 28
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Book Description
Author: Daniel A. Livingstone
Publisher: Palala Press
ISBN: 9781378867839
Category : History
Languages : en
Pages : 74
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Book Description
This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Author: Francis John Pettijohn
Publisher:
ISBN:
Category : Sandstone
Languages : en
Pages : 32
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Book Description
Author: Michael O'Donoghue
Publisher: Robert Hale
ISBN: 9780719803314
Category : Crafts & Hobbies
Languages : en
Pages : 294
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Book Description
This title is now in paperback for the first time.Artificial gemstones have been well established in the trade for some time, but now, following further refinements in their manufacture, gemmologists worldwide are facing increasing problems with identification.Today, gem-quality synthetic diamonds, once deemed impossible to produce, are becoming widely available, and, moreover, it is possible to create almost any major gemstone in whatever colour is desired. Then, too, the growth of diamonds by chemical vapour deposition is destined to present further problems. The synthetic products of the past, particularly of the 1960s, are still available, and are puzzling the newer generations of gemmologists who have not encountered them previously.In "Artificial Gemstones", Michael O'Donoghue provides the definitive guide to the various manmade substitutes thus enabling anyone handling gems to identify them accurately. Starting with the theory of synthetic gem manufacture and an explanation of the production methods used for growing and/or improving crystals - with their ornamental application - the book moves on to list and identify the materials themselves. Some of these have natural counterparts; others are new minerals and do not occur in nature. The author lists the identifying internal and external features and tests, and the book contains colour illustrations to display the inclusions found in transparent materials. The book is completed by an extensive bibliography and a useful appendix of trade names.Gemmologists, gem dealers, lapidaries, curators, amateurs and students of gemmology and mineralogy will all find this an indispensable addition to their bookshelves.
Author: Michael O'Donoghue
Publisher: Robert Hale
ISBN: 9780719803710
Category : Science
Languages : en
Pages : 203
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Book Description
Gems.
