This encyclopedia of gemstones is enlarged and updated from the Russian language version of Dictionary of Gemology: Gemstones(2001) by the same author. This encyclopedia contains an introductory section (33 pages), which includes a history of jeweler’s art and gemology, 22 best-known gemstones (150 pages), 29 lesser-known gemstones (37 pages), 46 gemstones for collectors (32 pages), 34 minerals and rocks as ornamental stones (82 pages), 11 bioorganic – jewelry – ornamental materials (32 pages), eight synthetic gemstones (7 pages), references (3 pages), appendixes (66 pages), index (33 pages).

Subtitles in the diamond section are composition and properties, color and optical...

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