Modern Jeweler’s Consumer Guide to Colored Gemstones


Book Description

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.




Jeweller's Directory of Gemstones


Book Description

"A complete reference for goldsmiths, collectors, and jewellery makers, this book is a comprehensive guide to identifying, buying, using and caring for a dazzling array of jewels and gems." "Discover the origins of gemstones and understand the process of selecting the raw material. Includes practical advice on how to assess the quality, rarity, grade, durability, and cut of precious and semi-precious stones." "Learn how gems are calibrated, using the industry standard measurements of carats and points, and how they can be treated to improve both colour and clarity. A glossary section clearly explains all of the key terminology used." "Illustrations and colour photographs help you to identify the gemstones available to jewellery makers, from amethysts and diamonds to tourmaline and quartz, and demonstrate how they can be used in different designs and settings."--Jacket




Secrets of the Gem Trade


Book Description

The definitive book for anyone wanting to learn how the best gemologists in the world evaluate precious gems, and what makes one stone merely a good stone versus a truly fabulous museum-quality gem. The author, Richard W. Wise, is one of the world's foremost gemologists.




Simon & Schuster's Guide to Gems and Precious Stones


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.




Proceedings of Fifth International Congress on Information and Communication Technology


Book Description

This book gathers selected high-quality research papers presented at the Fifth International Congress on Information and Communication Technology, held at Brunel University, London, on February 20–21, 2020. It discusses emerging topics pertaining to information and communication technology (ICT) for managerial applications, e-governance, e-agriculture, e-education and computing technologies, the Internet of Things (IoT) and e-mining. Written by respected experts and researchers working on ICT, the book offers a valuable asset for young researchers involved in advanced studies.




Technology Transfer


Book Description

As automation and competitiveness between companies and countries grows, the need for the speedy research and delivery of information is becoming greater than ever before. Defining technology transfer as ‘the process of getting technical knowledge, ideas, services, inventions, and products from their origin to wherever they can be put to practical use’, this book, first published in 1991, explores the role of the information specialist in the technology transfer process. It brings together discussions from information mediaries associated with federal information centres, academic research institutions, and a large metropolitan public library. Agencies and organizations at the federal, state, and local level that are involved in and responsible for technology transfer programs are described in a who's who section of the volume, and the system for the distribution of information at NASA is covered in detail, this being considered by some to be the birthplace of the technology transfer concept. The various regional NASA Industrial Application Centers are also identified, and the numerous print and online services available are noted as well. Other topics covered include the use of technology transfer in agricultural programs to improve U.S. competitiveness in the global marketplace and how the large public library can promote technology transfer by acting as important centres for information transfer and research.




Working with Gemstones


Book Description

Based on the popular column in AJM Magazine, this book offers illustrated insights into how to best work on gem-set jewelry. Readers will learn about common enhancements and treatments, how various gems react to heat and pressure, how to modify mountings to accommodate a gem's characteristics, and what tools they should always have close at hand. The book also includes a glossary, a guide to tool-specific dangers, and charts on how stones react to abrasives, chemicals, and heat.







Update on Malacology


Book Description

Update on Malacology is a compilation of high-impact research articles on the frontier areas of molluscan biology, physiology, aquaculture, and paleoecology. Topics covered include effects of dietary intake of shellfish in humans, beneficial effects of herbal compounds on the cognitive ability of molluscs, seasonal variation of molluscs acting as intermediate hosts of human parasites, current understanding of freshwater pearl culture, and the role of environmental parameters on the infectivity of freshwater snails and their paleoecological aspects. This book is an enriched edition of current trends of malacological research and is a useful resource for students, teachers, and researchers working in basic and applied malacology.




Gemstone Settings


Book Description

Gemstone Settings is the most in-depth, technical guide to stone setting. Jewelry makers will enjoy an encyclopedic overview, which features an extensive summary of stone-setting and techniques for creating beautiful gemstone jewelry, from basic bezels and prongs to pave, carre, clusters, and numerous others--including cold joins, precious metal clay, settings for fragile stones, and settings that allow the stones to move. You'll also discover detailed information about stones and metals--including their suitability, gorgeous photos and illustrations for visual support, what makes a design wearable and durable, and detailed information on pre-made versus handmade settings. Step by step, learn how to set your most beloved precious, semiprecious, and organic stones with projects that range from elegant diamond masterpieces to earthy pearl or coral everyday favorites.