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| #442472 in Books | Majestic Pr | 2002-11-22 | Original language:English | 9.75 x6.50 x.75l, | File type: PDF | 214 pages | ||16 of 16 people found the following review helpful.| Opal Identification & Value (Rocks, Minerals and Gemstones)|By A casual reader|While visiting Australia, I fell in love with precious opal and purchased a few pieces of jewelry and some loose gemstones for my collection. Although I was able to find basic information on evaluating and grading precious opal on the World Wide Web, I was frustrated by the lack of comprehensive co||Downing is eminently qualified to not only write about this colorful gem, but to create this definitive text on opal. -- Bob Jones, Rock & Gem Magazine, December, 2002
This revision is extraordinarily illuminating and will surely be the defin
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 so...
You can specify the type of files you want, for your gadget.Opal Identification & Value | Paul B. Downing. I have read it a couple of times and even shared with my family members. Really good. Couldnt put it down.
