Saturday, August 16, 2008



# Author: Michael O'Donoghue
# Publisher: Butterworth-Heinemann; 6 edition (April 18, 2006)
# Language: English
# ISBN-10: 0750658568
# ISBN-13: 978-0750658560
# Size: 17 MB

Reviews of the previous editions:

Any serious gemologist should have a copy available for ready reference.
Gems and Gemology

...a truly magnificent book.
New World

...this quintessential textbook and reference will serve yet another generation of students of gemology.
The Australian Gemologist

Book Description
The most comprehensive and authoritative treatise on gem materials