"[T]his is the first independent gemological book written or published by an [sic] British author. The text is distinctly in two parts, the first being a general treatise on gemstones in 25 unnumbered chapters, while the second...contains 89 numbered chapters, each describing a gemstone, stone, fossil, or other substance then regarded as valuable and classed with precious stones...Here also Nicols gives adulterations, nomenclature, varieties, sources, properties (real & imaginary!), and other useful information."--Gemology, by J. Sinkankas, entry no. 4754.

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