Download or read book Seventeenth Annual Sinkankas Symposium Agate and Chalcedony written by Lisbet Thoresen and published by . This book was released on 2021-06 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the Seventeenth Annual Sinkankas Symposium - Agate and Chalcedony

Download or read book Photoatlas of Inclusions in Gemstones written by Eduard Josef Gübelin and published by . This book was released on 2005 with total page 829 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Illustrated Guide to Jewelry Appraising written by Anna M. Miller and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: There is more to appraising jewelry than just being parable sales and a value determination. Then, all this able to put a dollar value on an item. The title of ap information, with clear jewelry descriptions, must be praiser distinguishes the individual who is able to iden succinctly put together with photographs and deliv tify, witness, estimate status, excellence, or potential ered to the client. ity, and to determine the authenticity of an article. Today's jewelry appraiser should also be cognizant Many factors impact on a thorough appraisal, espe of the vicissitudes of fashion, how changes impact the cially on estate and period jewelry. jewelry market in a substantial and vital manner in both design and style. A careful look must be given to Developing all this expertise is a lot to ask of practi tioners who only a decade ago were barely making a study of color psychology with an awareness of why specific gemstones and their colors and enamels of cer distinction between a well-written sales receipt and a professional appraisal report. tain colors were used in different periods. Industrial In the past few years bold changes have taken place developments, from machine stamped jewelry, the use in this field. It is now understood that standard ap of aniline dyes in clothing, and development of the praisal concepts and principles can be applied to the electric light, have influenced design and use of gem stones.

Download or read book Ruby and Sapphire written by Richard W. Hughes and published by . This book was released on 2017-01-01 with total page 816 pages. Available in PDF, EPUB and Kindle. Book excerpt: From the dawn of time, ruby and sapphire have both attracted and fascinated humans in ways that few other items could.While objects of desire are found throughout the natural world, physical beauty is too often ephemeral. From the allure of a man, woman, flower or butterfly, through the fleeting moments of a sunset, there is little that lasts and practically nothing that can be passed down to our descendants. The exception is precious stones. Not only are they the most durable creations of mother nature, but their visual splendor is truly eternal.In this companion to his 2013 book, Ruby & Sapphire--A Collector's Guide, Richard Hughes examines these gems from the gemological standpoint, delving into these gems not just from the aesthetic, but also from the scientific point of view.The product of nearly 40 years of firsthand experience, it covers every aspect of the subject from A-Z. History, sources, prices, quality analysis, synthetics and treatments, everything is here. Ruby & Sapphire--A Gemologist's Guide represents the most comprehensive book ever written on a single precious stone. With over 1000 photos, maps and illustrations and 3500 references, it is nothing less than a tour-de-force of gemological scholarship.

Download or read book Russian Alexandrites written by Karl Schmetzer and published by . This book was released on 2010 with total page 141 pages. Available in PDF, EPUB and Kindle. Book excerpt: Alexandrite, a variety of chrysoberyl, and one of the finest colour-change natural gemstones, may almost be called "the national gemstone of Russia". This great prestige is based on two facts: its noble name in honour of the Tsarevich Alexander Nikolaevich (the future Tsar Alexander II) and its dazzling colours, green in daylight and red in incandescent light, the military colours of Imperial Russia. Although quantities of facetable quality alexandrite are considerably less than those of emerald, alexandrite is counted among and compared to the "big four" of the gem business: diamond - ruby - sapphire - emerald. In this book the authors present an historical overview of emerald mining in the Urals, the discovery of Russian alexandrites in the Uralian emerald mines, the naming and historical use of alexandrites and their appearance and display in mineralogical museums and the gem trade. Morphology and twinning of rough alexandrite is described for single crystals, single contact twins and cyclic twins (trillings). Mineralogical and gemmological properties are thoroughly explained and numerous photo-micrographs of inclusions and growth patterns in faceted samples are presented. Chatoyancy and asterism of alexandrite and chrysoberyl from Russia and Sri Lanka are also described. A further chapter deals with characteristic growth patterns of Russian, other natural and synthetic alexandrites. Colorimetric data of Russian alexandrites and green chrysoberyls are explained using the CIELAB colour space, and the distinction between these varieties is explained. A chapter on trace element chemistry and locality determination rounds off the book. An extensive appendix containing lists of historical names, a time table and numerous references provides valuable information on Russian alexandrites for all researchers in the mineralogical and gemmological fields as well as for gemmological laboratories, jewellers and gem dealers. Consequently, this book, illustrated with more than 200 colour figures and photographs, addresses mineralogists, gemmologists, historians, mineral and gem collectors as well as all members of the gem trade.

Download or read book Treated Diamonds written by James E. Shigley and published by GIA Publications. This book was released on 2008 with total page 301 pages. Available in PDF, EPUB and Kindle. Book excerpt: Most of the material presented here was originally published in Gems & Gemology as articles and lab notes (short reports from the GIA Laboratory, formerly called the Gem Trade Laboratory) or as Gem News/Gem News International items between the years 1938 and 2007. Also included are summaries of presentations at GIA's 2006 International Gemological Symposium and Gemological Research Conference, which originally appeared in the Fall 2006 Proceedings volume produced by Gems & Gemology staff. The present work is organized in two main parts on color treatments and clarity treatments, with color photos and microimages on almost every page. Chapters in the section on color treatments cover coated diamonds, irradiated diamonds, and annealed diamonds. Chapters in the section on clarity treatments cover laser-drilled and glass-filled diamonds. Material is presented in chronological order to help readers follow the evolving areas of interest and understanding of these treatments. Some of the older material includes editorial comments to explain now-unfamiliar concepts or discuss significant development since the original publication. The book includes a poster-sized color chart enclosed in a side pocket, with color photos demonstrating diagnostic features of filled diamonds and testing techniques. Shigley is a distinguished research fellow at the GIA Lab in Carlsbad, California.

Download or read book The Sisk Gemology Reference written by Jerry Sisk and published by . This book was released on 2016-10-03 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive and visual gemology resource featuring more than 100 prominent gemstones.

Download or read book Emerald and Other Beryls written by John Sinkankas and published by . This book was released on 1989 with total page 708 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Simple Rules for the Discrimination of Gems written by T. S. G. Kirkpatrick and published by . This book was released on 1895 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Nature of Diamonds written by George E. Harlow and published by Cambridge University Press. This book was released on 1998 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt: The paragon of physical perfection and a sparkling example of Earth's forces at work, the diamond has fascinated all realms of society, from Russian tsars and Hollywood stars to scientists and brides-to-be. The Nature of Diamonds is an authoritative and richly illustrated look at nature's most coveted gem. Leading geologists, gemologists, physicists, and cultural observers cover every facet of the stone, from its formation in the depths of the Earth and its explosive ascent to the surface, to its economic, regal, social, and technological roles. The book takes the reader to cutting-edge research on the frontiers of diamond exploration and exploitation, from Arctic wastes to laboratories that create industrial diamonds for cutting tools that slice through rock. Charting the history of mining from its origins in India and Brazil, the book follows the diamond rush in South Africa to today's high-tech enterprises. It provides a glimpse into the economics of the diamond trade, and an overview of diamond cutting, from the rough uncut stones in early Indian and Roman jewelry to the multifaceted stones we see today. The cultural history of the diamond as both a revered and a social symbol is explored, from its early history as the exclusive property of royalty to today's brilliant-laden jewelry as an emblem of wealth and status. The engaging text is complemented by more than 200 lavish illustrations which span fine art, earth science, and cultural studies and capture the brilliance and beauty of this extraordinary gem.

Download or read book The Geology of Gem Deposits written by Lee Andrew Groat and published by . This book was released on 2007 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Emeralds of Pakistan written by A.H. Kazmi and published by Springer. This book was released on 1990-06-30 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Internal World of Gemstones written by Eduard Josef Gübelin and published by . This book was released on 1974 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Handbook of Gem Identification written by Richard Thomas Liddicoat and published by . This book was released on 1975 with total page 486 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Opal Identification Value written by Paul B.. Downing and published by Gem Guides Book Company. This book was released on 2003 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: New edition with added chapters and sections. Provides all the information necessary for complete analysis and evaluation of any opal from a true gem. Properly identify opals from all over the world and what characteristics affect value. Breathtaking color photos throughout.

Download or read book Gems Made by Man written by Kurt Nassau and published by . This book was released on 1980 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ruby Sapphire written by Richard W. Hughes and published by . This book was released on 2014 with total page 383 pages. Available in PDF, EPUB and Kindle. Book excerpt: