The Geology of Gem Deposits PDF Download
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Author: Lee Andrew Groat
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 330
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Book Description
Author: Lee Andrew Groat
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 330
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Book Description
Author: Walter Schumann
Publisher: Sterling Publishing (NY)
ISBN:
Category : Juvenile Nonfiction
Languages : en
Pages : 266
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Book Description
Describes the appearance, formation, physical properties and characteristics, mining, and cutting of precious, semiprecious, and synthetic gemstones.
Author: Peter G Read
Publisher: Elsevier
ISBN: 1483183122
Category : Nature
Languages : en
Pages : 241
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Book Description
Beginner's Guide to Gemmology presents the profiles of the principal gem materials. This book discusses the interesting characteristics of gemstones as the growing consumer market jewelry resulted in increased sales of gem testing instruments. Organized into 12 chapters, this book begins with an overview of the development of the science of gemmology. This text then explains the fundamental qualities necessary in a gem, including color, hardness, specific gravity, crystallography, refractive index, pleochroism, critical angle, luminescence, and absorption spectra. Other chapters consider the organic gem materials, including amber, ivory, coral, tortoiseshell, jet, ebony, and pearl. This book discusses as well the various methods used in the production of man-made gemstones and the commercial use in gem testing. The final chapter deals with the composition of synthetic gemstones. This book is a valuable resource for gemmologists and jewelers. Students who intend to become a qualified gemologist will also find this book extremely useful.
Author: June C. Zeitner
Publisher:
ISBN: 9780945005247
Category : Gem cutting
Languages : en
Pages : 0
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Book Description
A complete handbook of common materials used in lapidary arts, lavishly illustrated with full-colour photographs.
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.
Author: Eduard Josef Gübelin
Publisher:
ISBN: 9783039990290
Category : Crystals
Languages : en
Pages : 829
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Book Description
Author: Cornelius S. Hurlbut
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 304
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Book Description
A concise, systematic, yet comprehensive ``textbook'' treatment of the science. Examines origin, chemistry, crystallography, physical properties, and optical properties of gemstones, and discusses methods and instruments used to determine these properties. Highlights recent advances and important contributions; explores new methods of study and determination, crystal structures, causes of color, new gem minerals, new methods of gem synthesis, manufactured gems, chemical compounds used as substitutes, and imitations and simulations. Includes 12 full color plates, 350 halftones and line drawings, and a Gem Index that lists commonly sought characteristics along with page number references.
Author: Michael Bycroft
Publisher: Springer
ISBN: 3319963791
Category : History
Languages : en
Pages : 369
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Book Description
This edited collection is an interdisciplinary study of gems in the early modern world. It examines the relations between the art, science, and technology of gems, and it does so against the backdrop of an expanding global trade in gems. The eleven chapters are organised into three parts. The first part sets the scene by describing how gems moved around the early modern world, how they were set in motion, and how they were pulled together in the course of their travels. The second part is about value. It asks why people valued gems, how they determined the value of a given gem, and how the value of a gem was connected to its perceived place of origin. The third part deals with the skills involved in cutting, polishing, and mounting gems, and how these skills were transmitted and articulated by artisans. The common themes of all these chapters are materials, knowledge and global trade. The contributors to this volume focus on the material properties of gems such as their weight and hardness, on the knowledge involved in exchanging them and valuing them, and on the cultural consequences of the expanding trade in gems in Eurasia and the Americas.
Author: Edward Henry Kraus
Publisher:
ISBN:
Category : Nature
Languages : en
Pages : 360
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Book Description
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.
