Gems And Minerals
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Handbook Of Rocks Minerals And Gemstones
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Author : Walter Schumann
language : en
Publisher: Houghton Mifflin Harcourt
Release Date : 1993
Handbook Of Rocks Minerals And Gemstones written by Walter Schumann and has been published by Houghton Mifflin Harcourt this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with Nature categories.
Contains descriptions and photographs of approximately six hundred minerals, rocks, and meteorites, providing information about the history, origin, structure, composition, properties, classification, and location of each specimen.
A Book Of Precious Stones
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Author : Julius Wodiska
language : en
Publisher:
Release Date : 1918
A Book Of Precious Stones written by Julius Wodiska and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1918 with Precious stones categories.
Gems And Minerals Of The Bible
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Author : Ruth V. Wright
language : en
Publisher:
Release Date : 1970
Gems And Minerals Of The Bible written by Ruth V. Wright and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1970 with Bible categories.
Gem Minerals Of Victoria
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Author : William D. Birch
language : en
Publisher:
Release Date : 1997
Gem Minerals Of Victoria written by William D. Birch and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with Precious stones categories.
Gems And Minerals
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Author :
language : en
Publisher:
Release Date : 1986
Gems And Minerals written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986 with Mineralogy categories.
Gems Minerals Crystals And Ores
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Author : Richard Maxwell Pearl
language : en
Publisher: New York : Odyssey Press [1964]
Release Date : 1964
Gems Minerals Crystals And Ores written by Richard Maxwell Pearl and has been published by New York : Odyssey Press [1964] this book supported file pdf, txt, epub, kindle and other format this book has been release on 1964 with Crystallography categories.
A unique and authoritative survey for the gem cutter, collector, and hobbyist.
Gems And Gem Minerals
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Author : Oliver Cummings Farrington
language : en
Publisher: Theclassics.Us
Release Date : 2013-09
Gems And Gem Minerals written by Oliver Cummings Farrington and has been published by Theclassics.Us this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-09 with categories.
This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1903 edition. Excerpt: ...the high refractive power and hence play of colors of the latter. The stones are sometimes called "Matura diamonds," because of their abundance at Matura in the island of Ceylon. The colorless, or smoky zircons, are often known as "jargons" or "jargoons," a name said to have been given in allusion to the fact that though they resembled the diamond in luster they had really much less value. Besides zircons of this sort there are those known in jewelry as "hyacinth" or "jacinth," which are transparent zircons of a brownish, red-orange color. A stone of a nearly similar color is furnished by the essonite variety of garnet, and this is also often known as hyacinth. The high specific gravity of zircon above referred to is more than four times the weight of water, determinations giving results varying between 4.2 and 4.86. Zircon is thus the heaviest of gems, and will sink at once in any of the ordinary heavy liquids. The hardness of zircon is between that of quartz and topaz, being 7 . Its index of refraction is high, being 1.92, or near to the diamond among gems, a fact which accounts for its brilliancy when cut. Before the blowpipe zircon is infusible. It is not acted upon by acids except in fine powder by sulphuric acid. In composition it is a silicate of zirconium, the percentages being silica 32.8, zirconia 67.2. It usually also contains a little iron oxide. It is not an uncommon mineral in rocks, occurring in crystals of microscopic size, and in crystalline rocks it sometimes occurs in large and abundant crystals. These are usually opaque and of no value for gem purposes, although they are mined to some extent at the present time for use in incandescent lights. Opaque zircon is found...
A Book Of Precious Stones
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Author : Julius Wodiska
language : en
Publisher: Forgotten Books
Release Date : 2016-09-11
A Book Of Precious Stones written by Julius Wodiska and has been published by Forgotten Books this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-09-11 with Science categories.
Excerpt from A Book of Precious Stones: The Identification of Gems and Gem Minerals, and an Account of Their Scientific, Commercial, Artistic, and Historical Aspects From all these various standpoints has the subject been approached. The precious stones are described in chapters devoted to each, in the order in which they rank in popular estima tion, as are also the more important semi precious stones, which are classified, those occasionally used being brie y treated. Dia mond-cutting, its history and processes, the lapidary and his work, imitations and recon structed gems, myths and legends, favourite gems of the great, gems and gem minerals in museums, the trade union of the diamond cut ters, and the designing and making of jewelry in the new arts and crafts movement, are all considered, and further valuable specific in formation is comprehended in appended lists, tables, and an extensive bibliography. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works."
Smithsonian Treas Minerals Gems
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Author : WHITE JOHN SAMPSON
language : en
Publisher: Random House Value Publishing
Release Date : 1991-08-17
Smithsonian Treas Minerals Gems written by WHITE JOHN SAMPSON and has been published by Random House Value Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991-08-17 with Design categories.
Study of and guide to the Hall of Gems and mineral collection at the National Museum of Natural History. Includes a full description of the gems and minerals.
Peterson First Guide To Rocks And Minerals
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Author : Frederick H. Pough
language : en
Publisher: Houghton Mifflin Harcourt
Release Date : 1998-08-15
Peterson First Guide To Rocks And Minerals written by Frederick H. Pough and has been published by Houghton Mifflin Harcourt this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998-08-15 with History categories.
Written and designed for the beginner, this book describes and illustrates the most common and interesting rocks and minerals, from simple sandstone to exotic gems. Illustrated with dozens of beautiful color photographs, it tells how these rocks and minerals formed and how to identify them--and includes tips on collecting. 175 color photographs, 12 line drawings.