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Author : E. P. Youngman
Publisher :
ISBN 13 :
Total Pages : 24 pages
Book Rating : 4.3/5 (91 download)
Download or read book Zircon (the Gem) written by E. P. Youngman and published by . This book was released on 1931 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Various Authors
Publisher : Read Books Ltd
ISBN 13 : 1473394821
Total Pages : 58 pages
Book Rating : 4.4/5 (733 download)
Download or read book Zircon Gemstones - A Collection of Historical Articles on the Origins, Structure and Properties of Zircon written by Various Authors and published by Read Books Ltd. This book was released on 2014-07-07 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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, "Zircon Gemstones" contains information on their properties, origins, structure and much more. Intended to illustrate the main features of zircon 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.
Author : Flora Peschek-Böhmer
Publisher : Konecky Konecky
ISBN 13 : 9781568524429
Total Pages : 312 pages
Book Rating : 4.5/5 (244 download)
Download or read book Healing Crystals and Gemstones written by Flora Peschek-Böhmer and published by Konecky Konecky. This book was released on 2002 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: An illustrated encyclopedic explanation of the therapeutic uses of crystals and gems.
Author : E. P. Youngman
Publisher :
ISBN 13 :
Total Pages : 24 pages
Book Rating : 4.3/5 (91 download)
Download or read book Zircon (the Gem) written by E. P. Youngman and published by . This book was released on 1931 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Walter Schumann
Publisher : N. A. G. Press
ISBN 13 : 9780719803017
Total Pages : 279 pages
Book Rating : 4.8/5 (3 download)
Download or read book Gemstones of the World written by Walter Schumann and published by N. A. G. Press. This book was released on 2001 with total page 279 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 : DK
Publisher : Penguin
ISBN 13 : 1465462120
Total Pages : 442 pages
Book Rating : 4.4/5 (654 download)
Download or read book Gem written by DK and published by Penguin. This book was released on 2016-10-04 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: Prepare to be dazzled by this shining and sumptuous visual guide to the world's greatest treasures. Feast your eyes on glittering gemstones, kaleidoscopic minerals, and famous trinkets in this comprehensive exploration of Earth's finest jewels. Following a foreword from Aja Raden, hundreds of pages take a lavish look at precious stones, precious metals, and organic gems in all their natural wonder. From agate to zoisite, everything under the Sun is encapsulated in spectacular photography and accessible text. Trace the history of gemmology and get the inside story on our planet's most famous and fabulous gems, including the mysterious Hope Diamond, the stunning Koh-i-Noor of the Crown Jewels, and exquisite Fabergé eggs. Find out their physical properties, check the price tags, and discover the most remarkable record-breakers. This exceptionally extravagant book is a picture-packed, fact-filled celebration guaranteed to bring sparkle to your life and your library.
Author : Oliver Cummings Farrington
Publisher : Theclassics.Us
ISBN 13 : 9781230732220
Total Pages : 82 pages
Book Rating : 4.7/5 (322 download)
Download or read book Gems and Gem Minerals written by Oliver Cummings Farrington and published by Theclassics.Us. This book was released on 2013-09 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 : Lance Grande
Publisher : University of Chicago Press
ISBN 13 : 0226305112
Total Pages : 387 pages
Book Rating : 4.2/5 (263 download)
Download or read book Gems and Gemstones written by Lance Grande and published by University of Chicago Press. This book was released on 2009-11-15 with total page 387 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Gems and Gemstones" features nearly 300 color images of cut gems, precious and semiprecious stones, gem-quality mineral specimens, and fine jewelry to be unveiled in the new Grainger Hall of Gems at the Field Museum in Chicago.
Author : Susan Watt
Publisher : Marshall Cavendish
ISBN 13 : 9780761426882
Total Pages : 40 pages
Book Rating : 4.4/5 (268 download)
Download or read book Zirconium written by Susan Watt and published by Marshall Cavendish. This book was released on 2008 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduces the element of zirconium, discussing its physical and chemical properties, where it is found, and how it is used.
Author : Harish Johari
Publisher : Inner Traditions / Bear & Co
ISBN 13 : 9780892816088
Total Pages : 244 pages
Book Rating : 4.8/5 (16 download)
Download or read book The Healing Power of Gemstones written by Harish Johari and published by Inner Traditions / Bear & Co. This book was released on 1996-09 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: The author describes how to use the power of gemstones, using ancient Hindu disciplines, to heal and increase a sense of well-being.
Author : Antoinette Leonard Matlins
Publisher : Gemstone Press
ISBN 13 : 0943763592
Total Pages : 386 pages
Book Rating : 4.9/5 (437 download)
Download or read book Gem Identification Made Easy written by Antoinette Leonard Matlins and published by Gemstone Press. This book was released on 2008 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: This revised edition covers the latest gems, synthetics, treatments and instruments. It is easy to use, practical and non-technical indicating how to identify diamonds, coloured gemstones and pearls, as well as separating them from fakes and look-alikes. The book explains what instruments are needed and how to use them, where to obtain such instruments and what should be seen for each gemstone. Anyone can learn to identify most of the gems and imitations found in the market place. This volume is the key to avoiding costly mistakes and recognising profitable opportunities.
Author : David Federman
Publisher : Springer Science & Business Media
ISBN 13 : 1468464884
Total Pages : 251 pages
Book Rating : 4.4/5 (684 download)
Download or read book Modern Jeweler’s Consumer Guide to Colored Gemstones written by David Federman and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 251 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since early 1989, a gem dealer I've known for years has been calling me every few weeks to brief me on mounting mayhem in Colombia's lucrative emerald market. The troubling gist of these calls is always this: There is a full-fledged turf war going on between that South American country's bustling drug and gem trades for control of its emerald ex port business. According to this dealer and several others, anywhere from two to four thousand emerald industry people, mostly miners and deal ers, have been murdered since 1980. No doubt the gem sector, itself never gun shy, has retaliated in full and in kind. After all, the two groups have banded together in an intermittent alliance against a common enemy-Communist guerillas-with results the CIA would envy. I mention this bloodshed because of something the gem dealer once said to me: "I bet you never think of what a gem has to go through to get to a jewelry store:' He's right. I tend to think of colored stones as things of beauty, not objects of gruesome power struggles between mining kingpins and drug lords. Can you blame me, or anyone with insider knowledge, if a gem sheds any connection with its past once sculpted by a cutter into the glittering mar vel we see in a jeweler's showcase? Like Odysseus listening to the sirens' song, we become victims of an aesthetics-induced amnesia.
Author : Jill Keppeler
Publisher : Gareth Stevens Publishing LLLP
ISBN 13 : 1482447126
Total Pages : 32 pages
Book Rating : 4.4/5 (824 download)
Download or read book How Gems Are Formed written by Jill Keppeler and published by Gareth Stevens Publishing LLLP. This book was released on 2016-07-15 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Theyre sparkly with varied hues. You might see them in a beautiful necklace, a breathtaking ring, or even in a computer. Theyre gems! Gems are some of Earths most precious resources, and some of them are millionsor even billionsof years in the making. This detailed text, accompanied by colorful photographs, informs readers about the remarkable processes that take place under the surface of Earth to form different kinds of gems. Theyll also learn how some gems are mined, while others are replicated in laboratories. Future lapidaries will also find out how they might find and polish gems for themselves.
Author : Cally Oldershaw
Publisher : Firefly Books
ISBN 13 : 9781552978146
Total Pages : 228 pages
Book Rating : 4.9/5 (781 download)
Download or read book Firefly Guide to Gems written by Cally Oldershaw and published by Firefly Books. This book was released on 2003 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: A guide to the identification, structure, and uses of precious and semi-precious stones, novelty stones, agates, and crystals.
Author : Walter Schumann
Publisher : Houghton Mifflin Harcourt
ISBN 13 : 9780395511374
Total Pages : 390 pages
Book Rating : 4.5/5 (113 download)
Download or read book Handbook of Rocks, Minerals, and Gemstones written by Walter Schumann and published by Houghton Mifflin Harcourt. This book was released on 1993 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Author : William Alexander Deer
Publisher : Geological Society of London
ISBN 13 : 9781897799888
Total Pages : 940 pages
Book Rating : 4.7/5 (998 download)
Download or read book Rock-Forming Minerals: Orthosilicates, Volume 1A written by William Alexander Deer and published by Geological Society of London. This book was released on 1982-12-01 with total page 940 pages. Available in PDF, EPUB and Kindle. Book excerpt: A second edition, in two parts, of Volume 1 of this well-known reference series. This volume deals mainly with the olivine and garnet groups and also the humite group, zircon, sphene, vesuvianite, the Al2SiO5 (including mullite), topaz, staurolite and chloritoid. The disilicates and ring-silicates are covered in Volume 1B. In the years since the first edition was published, the quantity and scope of research on the olivines, garnets and the aluminosilicates has grown enormously and has given rise to a wide variety of literature. This book, which has been completely rewritten and considerably expanded, summarizes the important research results and presents them in an organized fashion. Each mineral chapter is divided into sections on structure, chemistry, optical and physical properties, distinguishing features and paragenesis. Each chapter is headed by a tabulation of mineral data and a sketch showing optical orientation, and concludes with full references to the literature. Diagrams of the crystal structures are presented and are followed by a discussion of the structural features. The chemical sections include a large number of analyses from which structural formulae have been calculated, illustrating the chemical and paragenetical variation exhibited by each mineral; phase equilibria in relevant systems are fully considered. In the sections on optical and physical properties, particular attention is paid to the correlation of these properties with chemical composition. The principal modes of occurrence are described and discussed in the paragenesis sections; here again correlation with chemistry is emphasized. 11 volumes are available in this series.
Author : Beth Shapiro
Publisher : Basic Books
ISBN 13 : 1541644158
Total Pages : 313 pages
Book Rating : 4.5/5 (416 download)
Download or read book Life as We Made It written by Beth Shapiro and published by Basic Books. This book was released on 2021-10-19 with total page 313 pages. Available in PDF, EPUB and Kindle. Book excerpt: From the first dog to the first beefalo, from farming to CRISPR, the human history of remaking nature When the 2020 Nobel Prize was awarded to the inventors of CRISPR, the revolutionary gene-editing tool, it underlined our amazing and apparently novel powers to alter nature. But as biologist Beth Shapiro argues in Life as We Made It, this phenomenon isn’t new. Humans have been reshaping the world around us for ages, from early dogs to modern bacteria modified to pump out insulin. Indeed, she claims, reshaping nature—resetting the course of evolution, ours and others’—is the essence of what our species does. In exploring our evolutionary and cultural history, Shapiro finds a course for the future. If we have always been changing nature to help us survive and thrive, then we need to avoid naive arguments about how we might destroy it with our meddling, and instead ask how we can meddle better. Brilliant and insightful, Life as We Made It is an essential book for the decades to come.
