Gemstones And Their Origins
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Gemstones And Their Origins
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Author : P.C. Keller
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Gemstones And Their Origins written by P.C. Keller and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Science categories.
Each gem deposit-whether of primary origin in the parent rocks; or secondary as alluvial placers in valley floors, river gravels, or the sand of oceanic shelves presents an eloquent chronicle of the Earth's life story. It reveals to the expert the prodigious processes which formed the present crust of our planet, of which this volume discloses a small but exciting detail. The materials of the Earth's crust are the rocks. In this book, the author expounds on how they were formed, why they altered, why they became the cradles of precious gemstones, how they are categorized, and how they are now exploited by man. What initiates the growth of gemstones? How do they crystallize? Why do gemstones of the same species, originating from different sources, vary? What causes the occurrence of varieties? Why do diamonds, unlike other precious stones, occur not near the Earth's surface in its crust, but deep down beneath it in the upper mantle? These are only a few of the entrancing subjects discussed in this enlightening volume. The reader learns that the Earth is surprisingly alive and altering constantly-sometimes through slow and equable changes and at times by violent and tremendous cataclysms, events from which gemstones issue.
Antique Gems
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Author : Charles William King
language : en
Publisher:
Release Date : 1860
Antique Gems written by Charles William King and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1860 with Art antic categories.
Precious Stones And Their Stories An Article On The History Of Gemstones And Their Use
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Author : A. Hyatt Verrill
language : en
Publisher: Read Books Ltd
Release Date : 2016-08-26
Precious Stones And Their Stories An Article On The History Of Gemstones And Their Use written by A. Hyatt Verrill and has been published by Read Books Ltd this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-08-26 with Nature categories.
A scientific history of gemstones and crystals around the world. Featuring the origin, symbolism, and uses of various precious stones. This detailed article explores the history of gemology and crystallography and is an excellent read for those wishing to deepen their knowledge of the subjects. First published in 1939, Precious Stones and Their Stories was written by A. Hyatt Verrill, a respected nature historian.
Diamonds And Precious Stones
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Author : Harry Emanuel
language : en
Publisher:
Release Date : 1865
Diamonds And Precious Stones written by Harry Emanuel and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1865 with Diamonds categories.
Precious Stones And Gems Their History Sources And Characteristics
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Author : Edwin W. Streeter
language : en
Publisher: Рипол Классик
Release Date : 1892
Precious Stones And Gems Their History Sources And Characteristics written by Edwin W. Streeter and has been published by Рипол Классик this book supported file pdf, txt, epub, kindle and other format this book has been release on 1892 with History categories.
Precious Stones And Gems
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Author : Edwin William Streeter
language : en
Publisher:
Release Date : 1892
Precious Stones And Gems written by Edwin William Streeter and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1892 with Gems categories.
Precious Stones And Gems Their History Sources And Characteristics
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Author : Edwin William Streeter
language : en
Publisher: Theclassics.Us
Release Date : 2013-09
Precious Stones And Gems Their History Sources And Characteristics written by Edwin William Streeter 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. 1898 edition. Excerpt: ...about thirty miles in a northeasterly direction from Bo Navong. An excellent description of the Ruby-mines has recently been published by Mr. H. Warington Smyth, who was for some years Director of the Department of Mines in Siam. He considers that the Rubies have probably been derived from the disintegration of certain basaltic rocks, which formed their matrix. The principal Rubyworkings are now at Bo Wen and Taphan Hin, in Chantaboon; and at Bo Yan, Navong and Klong Kwang, in Krat. Rubies are also worked at Ho Klong, Klong Yai and elsewhere, on the east side of the Kao Patat. Prof. H. Louis has also described the Ruby deposits of Moung Klung, between Chantaboon and Krat. He considers that the gem stones have been derived from the decomposition of the trap rocks, which occur so largely in the district. The Sapphires, which are of far more importance in Siam than the Rubies, will be fully described in a subsequent chapter. CEYLON RUBIES. From time immemorial the island of Ceylon, or "Taprobane" as it was termed by the classical writers of antiquity, has been famous for precious stones. These are found in the form of rolled crystals and rounded fragments in detrital deposits in the valleys, spread over the lowlands, and in the sands of rivers. Shallow pits are dug by the natives in these deposits, and the gem stones separated from the associated earth by simply washing. The principal localities for the stones are in the neighbourhood of Ratnapura, or the "City of Gems," and Rakwena. The gemstones include various kinds of coloured Corundum, but Sapphires are much more common than Rubies. Moreover, the Ceylon Rubies are usually of pale colour, being rosecoloured rather than decidedly red, are of only small value, and are, ...
A Treatise On Diamonds And Precious Stones
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Author : John Mawe
language : en
Publisher:
Release Date : 1813
A Treatise On Diamonds And Precious Stones written by John Mawe and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1813 with Diamonds categories.
Emerald Gemstones A Collection Of Historical Articles On The Origins Structure Properties And Uses Of Emeralds
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Author : Various Authors
language : en
Publisher: Read Books Ltd
Release Date : 2014-07-07
Emerald Gemstones A Collection Of Historical Articles On The Origins Structure Properties And Uses Of Emeralds written by Various Authors and has been published by Read Books Ltd this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-07-07 with Nature categories.
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. Carefully selecting the best articles from our collection we have compiled a series of historical and informative publications on the subjects of gemology and crystallography. The titles in this range include "Gemstone Manufacturing" "The Optical Properties of Gemstones and Crystals" "The Thirty-Two Classes of Crystal Symmetry" and many more. Each publication has been professionally curated and includes all details on the original source material. This particular instalment, "Emerald Gemstones" contains information on their properties, origins, structure and much more. Intended to illustrate the main features of emeralds it is a comprehensive guide for anyone wishing to obtain a general knowledge of the subject and to understand the field in its historical context. We are republishing these classic works in affordable, high quality, modern editions, using the original text and artwork.
Tourmaline Gemstones A Collection Of Historical Articles On The Origins Structure And Properties Of Tourmaline
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Author : Various Authors
language : en
Publisher: Read Books Ltd
Release Date : 2016-08-26
Tourmaline Gemstones A Collection Of Historical Articles On The Origins Structure And Properties Of Tourmaline written by Various Authors and has been published by Read Books Ltd this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-08-26 with Nature categories.
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. Carefully selecting the best articles from our collection we have compiled a series of historical and informative publications on the subjects of gemology and crystallography. The titles in this range include "Gemstone Manufacturing" "The Optical Properties of Gemstones and Crystals" "The Thirty-Two Classes of Crystal Symmetry" and many more. Each publication has been professionally curated and includes all details on the original source material. This particular instalment, "Tourmaline Gemstones" contains information on their properties, origins, structure and much more. Intended to illustrate the main features of tourmaline it is a comprehensive guide for anyone wishing to obtain a general knowledge of the subject and to understand the field in its historical context. We are republishing these classic works in affordable, high quality, modern editions, using the original text and artwork.