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| #3105779 in Books | 1990-08-30 | Original language:English | PDF # 1 | 9.75 x7.00 x1.25l,.0 | File type: PDF | 390 pages||0 of 0 people found the following review helpful.| Wonderful book.|By Alejandro M.|Wonderful book.|0 of 0 people found the following review helpful.| Four Stars|By xiaowenwang|it is okay.|0 of 0 people found the following review helpful.| Honest Title|By Jon L.|Can actually be used to test gems...an honest title.
The overall format of previous editions has been maintained and new information has been incorporated in a similar style. This edition has two new chapters, on the manufacture and enhancement of gemstones and the old chapter on the detection of synthetic, imitation and composite stones has been rearranged. In the past decade the development of new synthetics has proceeded apace. Nowadays clean rubies and emeralds need very careful investigation since they could be natura...
You can specify the type of files you want, for your device.Gem Testing, Tenth Edition | B W Anderson. Just read it with an open mind because none of us really know.
