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    THE HEAT TREATMENT OF
     RUBY AND SAPPHIRE
     (1st Edition)

    THE HEAT TREATMENT OF
    RUBY AND SAPPHIRE
    (2nd Edition)

    THE HEAT TREATMENT OF
    RUBY AND SAPPHIRE
    (3rd Edition)

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    RUBIES & SAPPHIRES

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The Heat Treatment of Ruby and Sapphire
by Ted Themelis

This is the highest technical volume for the layman on the subject of the heat treatment of ruby-sapphire and the only book that deals exclusively with the subject. This book is an account of the most commonly practiced heat treatment methods and apparatuses which alter the appearance of ruby- sapphire. This book explains how the chromophoric impurities may enhance or sometimes ruin rubies and sapphires after heating. Over 500 heat-treatment experiments performed on rubies-sapphires from worldwide localities are discussed in this book, as performed at the author's laboratory.

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This edition is signigicantly rare and used copies sell for $350-$2,904 in amazon.com as used copy.

THE 3RD EDITION OF "HEAT TREATMENT OF RUBIES AND SAPPHIRES" IS NOW IN PROGRESS.

Reserve the 3rd edition - expected within 2015
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  • List: US$ 90 + shipping
  • Format: Hardcover, 6"x9"
  • 234 B/W pp.
  • ISBN: 0-940965-10-0
  • Publisher: Gemlab Inc.
  • Pub. Date: December 1992
SOLD OUT

Features

Crisp, concise and authoritative, this comprehensive up-to-date work reveals a wealth of facts on the "new" beryllium treatment method practiced in Thailand on rubies and sapphires. This work provides key coverage and detail needed for the gemologist, jeweler, gem trader and just about anyone involved in the gem and jewelry business. For the gemologist, this work broadens the existing understanding of this complex, diverse and controversial issue. It illustrates numerous inclusion color photomicrographs contributing invaluable reference data that every library should have.

For the gem trader, this work provides the information needed to enhance their knowledge in everyday dealing with gems to avoid costly mistakes. For the jeweler this edition illustrates the complexity of the issue and provides accurate information and full disclosure to jewelry merchandisers, salespersons and consumer.


Selected Reviews

"A unique, well balanced and readable text covering both the thermochemical theory and the practical details necessary for the heat treatment of corundum and its detection. Highly recommended."
-Peter G. Read, C. Eng, MIEE, MIERE, FGA


"This book has a truly astonishing amount of unpublished experimental data on a subject of broad interest, in theory as well as in practice. This work is of particular interest for gemologists, geologists, and the mineralogists. It also, may be of invaluable use for those involved in the gem trade."
-V. de Michele, Istituto Gemmologico Italiano


"This is the first book to deal with both the practical heat treatment of corundum and its technical/scientific aspects. The great number of empirical results presented makes it possible for the reader to fully appreciate the complexity of the subject. The author has carried out experiments on all available samples in order to record variations in the color mechanism response As Ted Themelis shows, heat treatment cannot work wonders; however, under controllable conditions the results in many cases may cause surprise.
The reader of this volume, who is looking for a sure-fire recipe for treating his particular specimens will be started by the detailed descriptions of the many different materials and their specific methods of treatment. Some gemologists and dealers in precious stones will also be surprised by both the extensive list of corundum deposits, some of them relatively unknown, and by the characterization of the respective gems.
This book by Ted Themelis is an important addition to the list of technical publication on gemstones. As a text, it is recommended to every gemologist who has an open mind to the current developments in the field of corundum heat treatment.
" -Dr. H A. Hanni, SSEF - Swiss Gemmological Institute.


 


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