The heat treatment of ruby and sapphire
By: Ted Themelis.
Edition: 1st limited ed.
Publisher: Gemlab
Published: 1992
Place of publication: [Clearwater, Fla.]
Language: eng
Number of pages: 236
Subjects: Rubies -- Heat treatment.; Sapphires -- heat treatment.
Notes: Includes bibliographical references (p. 228-231) and index.
"An account of the most commonly practiced heat treatment methods and apparatuses, which alter the appearance of the ruby and sapphire; their occurences, descriptions, inculusion characteristics, identification, and other features."