Volume 2 of a classic, thorough study of precious and semi-precious stones: diamond, topaz, opal, turquoise, ruby, emerald, garnet, more. Fullest, most exhaustive survey ever prepared. "The most detailed work on gems." Encyclopedia Britannica. Translated by L. C. Spencer. Total in set: 20 plates, 8 in color. 94 figures.
Volume 2 of a classic, thorough study of precious and semi-precious stones: diamond, topaz, opal, turquoise, ruby, emerald, garnet, more. Fullest, most exhaustive survey ever prepared. "The most detailed work on gems." Encyclopedia Britannica. Translated by L. C. Spencer. Total in set: 20 plates, 8 in color. 94 figures.
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