Minerals and Precious Stones of Brazil PDF Download
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Author: Carlos Cornejo
Publisher:
ISBN: 9788589820080
Category : Gemology
Languages : en
Pages : 704
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Book Description
"Brazil was the leading world producer of gold and of diamonds between the mid-18th century and the mid-19th century. At the present time, it is the leading world producer of iron ore, tin and niobium, and an important producer of manganese, aluminium, silicon, tantalum, rare earths, graphite, magnesite and countless other ores.....Brazil is the leading world producer of tourmaline (of all colors), of quartz (colorless, rutilated, amethyst and agate), of beryl (aquamarine, morganite and heliodore, and the second ranking world producer of emerald), of topaz (imperial, blue and colorless), alexandrite, euclase, phenakite and many others" INTRODUCTION.
Author: Carlos Cornejo
Publisher:
ISBN: 9788589820080
Category : Gemology
Languages : en
Pages : 704
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Book Description
"Brazil was the leading world producer of gold and of diamonds between the mid-18th century and the mid-19th century. At the present time, it is the leading world producer of iron ore, tin and niobium, and an important producer of manganese, aluminium, silicon, tantalum, rare earths, graphite, magnesite and countless other ores.....Brazil is the leading world producer of tourmaline (of all colors), of quartz (colorless, rutilated, amethyst and agate), of beryl (aquamarine, morganite and heliodore, and the second ranking world producer of emerald), of topaz (imperial, blue and colorless), alexandrite, euclase, phenakite and many others" INTRODUCTION.
Author: Liza Urla
Publisher: Antique Collector's Club
ISBN: 9781851498819
Category : Antiques & Collectibles
Languages : en
Pages : 0
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Book Description
Liza Urla is the author of the jewelry blog, Gemologue https://gemologue.com/tag/jewelry-blog
Author: Julius Wodiska
Publisher:
ISBN:
Category : Precious stones
Languages : en
Pages : 482
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Book Description
Author: George Frederick Kunz
Publisher:
ISBN:
Category : Gems
Languages : en
Pages : 42
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Book Description
Author: Terry Moxon
Publisher:
ISBN:
Category : Agates
Languages : en
Pages : 116
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Book Description
Author: Kennie Lyman
Publisher: Touchstone
ISBN: 9780671604301
Category : Nature
Languages : en
Pages : 388
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Book Description
Simon & Schuster's Guide to Gems and Precious Stones provides both the connoisseur and the casual collector with a compact, easy-to-use volume describing more than 100 rare varieties of minerals whose beauty and mystery have possessed our imaginations from time immemorial. More than 450 brilliant photographs accompany profiles of each gem, covering such aspects as appearance, physical properties -- density, hardness, refraction -- occurrence, and how to judge quality and value. Additional sections describe the process of cutting gemstones and the techniques professional gemologists use to evaluate a stone's weight and optical properties. Detailed and comprehensive, this book is essential for anyone interested in the study of gems and precious stones.
Author: Elizabeth Ferry
Publisher: University of Toronto Press
ISBN: 1487503172
Category : Social Science
Languages : en
Pages : 217
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Book Description
Based on a Wenner-Gren international workshop, held at the Royal Ontario Museum, this book addresses the complexity of human-mineral engagements through ethnographic case studies and anthropological reflections on different people and the minerals they deem 'precious.'
Author: Panagiotis Voudouris
Publisher: MDPI
ISBN: 3039280767
Category : Science
Languages : en
Pages : 528
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Book Description
Gems have been used in the manufacture of jewellery and as ornaments since antiquity. Considering gems, recent statistics have shown that about 15 billion Euros are annually at stake. Nowadays, gemmology, i.e., the study of gem materials, is one of the most expanding fields in the earth sciences, positioned between academia and industry. As an applied science, in gemmology, the instruments used should be non- or microdestructive, and their cost should be reasonable both in terms of equipment and time consumption. Gemmology can also be used contribute to the development of pure science and in some cases, destructive techniques may have to be used. Taking into account the fact that gems are albeit rarely available for scientific research, this compilation of 20 articles by around 100 researchers from over 30 different institutions situated in 20 countries from around the globe, presented in the Special Issue entitled “Mineralogy and Geochemistry of Gems”, offers very good examples on the application of various methods for their study which will hopefully contribute to our better understanding of gem formation in general and will enhance scientific debates attracting more scientists from various disciplines to get involved in this field.
Author:
Publisher:
ISBN:
Category : Mineral industries
Languages : en
Pages : 344
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Book Description
A monthly inventory of information from U.S. Government Foreign Service offices and other sources that may not otherwise be made available promptly.
Author: Walter Schumann
Publisher: N. A. G. Press
ISBN: 9780719803017
Category : Precious stones
Languages : en
Pages : 279
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Book Description
A comprehensive manual of the world's gemstones and includes more than 1,400 examples. Opposite each illustration, this text provides a description of the particular stone, including details of the properties and chemical composition which makes the stone unique. It also gives information on location of major deposits, and alternative names.
