Opal and Identification and Value

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OPAL IDENTIFICATION & VALUE

Paul B. Downing. Ph.D.

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 determine the characteristics that affect value, then determine price from updated value tables.

213 pp, hundreds of photographs and illustrations, many in full color; tables, index, Hardback

(BKOIV)

SKU BKOIV
Shipping Weight 0.5600kg
Shipping Width 0.020m
Shipping Height 0.160m
Shipping Length 0.240m
Shipping Cubic 0.000768m3

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