All about Gold, Gems, and Pearls (Also Minerals Generally) in Ceylon and Southern India PDF Download
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Author: A M Ferguson
Publisher: Franklin Classics Trade Press
ISBN: 9780343859435
Category :
Languages : en
Pages : 444
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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 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. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Author: A M Ferguson
Publisher: Franklin Classics Trade Press
ISBN: 9780343859435
Category :
Languages : en
Pages : 444
Get Book Here
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 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. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Author: A. M. Ferguson
Publisher:
ISBN:
Category : Gold mines and mining
Languages : en
Pages : 450
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Author: Alastair Mackenzie Ferguson
Publisher:
ISBN:
Category :
Languages : en
Pages : 428
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 198
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Author:
Publisher:
ISBN:
Category : Allspice
Languages : en
Pages : 322
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Author: George Frederick Kunz
Publisher:
ISBN:
Category : Pearl divers
Languages : en
Pages : 828
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Book Description
Author: Oliver Cummings Farrington
Publisher: Theclassics.Us
ISBN: 9781230732220
Category :
Languages : en
Pages : 82
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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...
Author:
Publisher:
ISBN:
Category : Engineering
Languages : en
Pages : 792
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Author: Henry Philip Hope
Publisher: Nabu Press
ISBN: 9781294724438
Category :
Languages : en
Pages : 222
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Book Description
This is a reproduction of a book published before 1923. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed works worldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book. ++++ The below data was compiled from various identification fields in the bibliographic record of this title. This data is provided as an additional tool in helping to ensure edition identification: ++++ A Catalogue Of The Collection Of Pearls And Precious Stones Formed By Henry Philip Hope, Esq Henry Philip Hope, Bram Hertz Printed by William Clowes and Sons, 1839 Crafts & Hobbies; Jewelry; Crafts & Hobbies / Jewelry; Gems; Nature / Rocks & Minerals; Pearls
Author: U.S. Geological Survey Library
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 782
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