Online Encyclopedia

Search over 40,000 articles from the original, classic Encyclopedia Britannica, 11th Edition.

CHRYSOPRASE (Gr. Xpvvor, gold, and ap...

Online Encyclopedia
Originally appearing in Volume V06, Page 321 of the 1911 Encyclopedia Britannica.
Spread the word: del.icio.us del.icio.us it!

See also:

CHRYSOPRASE (Gr. Xpvvor, See also:gold, and apaorov, See also:leek)  , a name applied by See also:modern mineralogists to an See also:apple-See also:green variety of See also:chalcedony or hornstone, used as an ornamental See also:stone . The See also:colour is due to the presence of See also:nickel, probably in the See also:form of a hydrous silicate . By exposure to a moderate See also:heat, or to strong See also:light, the See also:chrysoprase becomes paler, or even colourless, but it may regain its colour by absorption of moisture . Chrysoprase is a See also:mineral of rather limited See also:distribution . Most of it comes from the neighbourhood of See also:Frankenstein in See also:Silesia, where it occurs in association with altered See also:serpentine . It is found to a limited extent at Revdinsk, near See also:Ekaterinburg, in the Urals; and it occurs also in See also:India . It is known, too, at several localities in See also:North See also:America, notably at Nickel See also:Mount, See also:Douglas See also:county, See also:Oregon, where it occurs in nickeliferous serpentine . The chrysoprase of the moderns is certainly not the chrysoprasius of See also:Pliny, or the Xpvalnrpaaos of See also:Greek writers . The See also:ancient stone was not improbably our See also:chrysoberyl, and it is doubtful whether the modern chrysoprase was known until a comparatively See also:late See also:period . The chrysoprase of Kosemutz, near Frankenstein in Silesia, was discovered in 1740, and used by See also:Frederick the See also:Great in the decoration of the See also:palace of Sans Souci at See also:Potsdam . But at a much earlier date the Silesian chrysoprase was used for mural decoration at the See also:Wenzel See also:chapel at See also:Prague . Chrysoprase was a favourite stone in See also:England at the beginning of the 19th See also:century, being set See also:round with small brilliants and used for brooches and rings .

At the See also:

present See also: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 See also:salt of nickel . (F . W .

End of Article: CHRYSOPRASE (Gr. Xpvvor, gold, and apaorov, leek)
[back]
CHRYSOLITE
[next]
CHRYSOSTOM

Additional information and Comments

There are no comments yet for this article.
» Add information or comments to this article.
Please link directly to this article:
Highlight the code below, right click and select "copy." Paste it into a website, email, or other HTML document.