Precious Stones and Gems —— Their History, Sources and Characteristics

Name: Precious Stones and Gems
Rating: 3
ISBN: 9781332028399

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ISBN: 9781332028399 出版年：2016 页码：409 Edwin W Streeter Forgotten Books

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内容简介

In determining the value of gems, it must be borne in mind that a perfect stone is never met with; and that probably not even ten per cent. Of the stones which are brought into commerce are really Of fine quality.

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