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Encyclopedia Britannica - Main :: CHR-CLI |
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CHRYSOPRASE (Gr. Xpvvor, gold, and apaorov, leek) , a name applied by modern
chalcedony or hornstone, used as an ornamental stone. The colour is due to the presence of nickel, probably in the form of a hydrous silicate. By exposure to a moderate heat, or to strong light, the chrysoprase becomes paler, or even colourless, but it may regain its colour by absorption of moisture. Chrysoprase is a mineral
in North America, notably at Nickel Mount
Oregon
The chrysoprase of the moderns is certainly not the chrysoprasius of Pliny, or the Xpvalnrpaaos of Greek writers. The ancient stone was not improbably our chrysoberyl, and it is doubtful whether the modern
late
Great
century , being set round with small brilliants and used for brooches and rings. At the present time it is said to be regarded by some as a " lucky stone." Much commercial chrysoprase is chalcedony artificially stained by impregnation with a green salt of nickel. (F. W. R.*)End of Article: CHRYSOPRASE (Gr. Xpvvor, gold, and apaorov, leek) If you wish, you can link directly to this article.
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