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Opal Identification Value (Rocks, Minerals and Gemstones)
Opal Identification Value - Rocks, Minerals and Gemstones
Author: Paul B. Downing
The world standard is back by popular demand! This completely revised, updated and expanded version of Dr. Downing's 1992 Opal Identification and Value is a "must have" for all appraisers, opal buyers and opal lovers. Learn to properly identify opals from all over the world. Many new locations have been added along with new methodology to determ...  more »
ISBN-13: 9780962531187
ISBN-10: 0962531189
Publication Date: 11/22/2002
Pages: 214
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Publisher: Gem Guides Book Company
Book Type: Hardcover
Members Wishing: 1
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