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. Ascertain if the opal is a natural solid, boulder, doublet, triplet, dyed or lab-created. Be able to ask definitive questions when considering an opal. Learn what to look for in properly set jewelry. Become a confident buyer, seller or appraiser by distinguishing an ordinary opal from an outstanding one.

About the Author

A self-proclaimed opalholic, Paul B. Downing has an international reputation as an opal expert, having traveled extensively in Australia and throughout the United States cultivating his knowledge. He has given numerous presentations for AGTA, GIA, the NAJA and lapidary and professional societies in Europe and the United States. His accomplishments include: inducted into the National Rockhound and Lapidary Hall of Fame, 1999, and winner of three AGTA Cutting Edge Awards for opal. In addition to the original Opal Identification and Value (1992) he has written three other highly acclaimed books, "Opal Cutting Made Easy," "Opal Advanced Cutting & Setting," and "Opal Adventures."

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