The Heat Treatment of Ruby & Sapphire
by Ted Themelis

This book is based on Ted's classic work published in 1992 and provides the best information for the layman in heating ruby-sapphire. It is the only complete book that deals exclusively with the subject written by a veteran working in heat treating ruby-sapphire since 1985. This book is an account of the most commonly practiced heat treatment methods and apparatuses which alter the appearance of ruby- sapphire. This edition explains how the chromophoric impurities may enhance or sometimes ruin rubies and sapphires after heating. Over 3840 pages, 1100+ color photos and diagrams explaining 600+ heat-treatment experiments performed on rubies-sapphires from worldwide localities are discussed in this book, as performed at the author's laboratory in Bangkok.

TABLE OF CONTENTS

CHAPTER 1. Introduction
CHAPTER 2. Attributes of ruby-sapphire
CHAPTER 3. Classification of heating processes
CHAPTER 4. Additives in heat-treating ruby-sapphire
CHAPTER 5. Heat-treating methodology
CHAPTER 6. Coloration and heat treatment processes
CHAPTER 7. Surface color diffusion heating processes
CHAPTER 8. Fracture filling heating process
CHAPTER 9. Beryllium heat-treatment process
CHAPTER 10. Heat treatment furnaces & equipment
CHAPTER 11. Heating ruby-sapphire by locality (Afghanistan to Zimbabwe)
CHAPTER 12. Heat treatment of synthetic ruby-sapphire
CHAPTER 13. Problems in heat-treating ruby-sapphire

GLOSSARY
BIBLIOGRAPHY
INDEX