Ruby and Sapphire
Ruby and Sapphire

Author: Richard W. Hughes

Publisher:

Published: 2017-01-01

Total Pages: 816

ISBN-13: 9780964509719

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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.

Atlas of Meteorites
Atlas of Meteorites

Author: Monica M. Grady

Publisher: Cambridge University Press

Published: 2014-11-06

Total Pages: 0

ISBN-13: 1139915649

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A complete visual reference for meteorite classification, this atlas combines high resolution optical microscope images with detailed descriptions. It provides a systematic account of meteorites and their most important classification parameters, making it an essential resource for meteorite researchers. Each chapter starts with a description of the meteorite class, with a summary of the mineralogical, chemical and isotopic characteristics of the group. The full-color images are taken in plane- and cross-polarized light and reflected light, and arranged to highlight textural variations in meteorites. Specimens are grouped to show the effects of increasing thermal alteration and shock, as well as variations in chondrule size and type. Chapters on iron meteorites, pallasites and mesosiderites are included, photographed as mounts in reflected light, to show the range of textural variations that accompany these meteorites. Images from the book can be downloaded from www.cambridge.org/9780521840354.

A Catalogue of the Minerals of Tasmania
A Catalogue of the Minerals of Tasmania

Author: Ralph Stephen Bottrill

Publisher:

Published: 2008

Total Pages: 254

ISBN-13: 9780724640218

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Catalogues of the minerals found in Tasmania have been kept since almost the earliest days of mining and have been of invaluable assistance to prospectors, mineral explorers, mineralogists and collectors. This catalogue was first published by the Tasmania Department of Mines in 1910, and was extensively revised in 1969. Since then the improvements in technology and further investigations of minerals and mineral deposits have not only increased the number of identified species and data on mineral occurrences, but have also invalidated many previous 'species'. This catalogue extensively updates the previous catalogue. A total of 753 minerals are described, comprising 483 confirmed species, 162 unconfirmed species, 72 variety or invalid names, and 36 series and group names. All entries in the 1969 catalogue have been re-evaluated and are now reclassified as to their known or likely validity. Species invalidated or doubted from the 1969 listing have been retained, with comments.

Treated Diamonds
Treated Diamonds

Author: James E. Shigley

Publisher: GIA Publications

Published: 2008

Total Pages: 301

ISBN-13: 9780873110549

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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.