ALEXANDRITE
, a variety of See also:chrysoberyl (q.v.) discovered in the Urals in 1833, on the See also:day set apart for celebrating the See also:majority of the See also:cesarevich, afterwards the See also:tsar, See also:Alexander II., in whose See also:honour the See also:- STONE
- STONE (0. Eng. shin; the word is common to Teutonic languages, cf. Ger. Stein, Du. steen, Dan. and Swed. sten; the root is also seen in Gr. aria, pebble)
- STONE, CHARLES POMEROY (1824-1887)
- STONE, EDWARD JAMES (1831-1897)
- STONE, FRANK (1800-1859)
- STONE, GEORGE (1708—1764)
- STONE, LUCY [BLACKWELL] (1818-1893)
- STONE, MARCUS (184o— )
- STONE, NICHOLAS (1586-1647)
stone was named by Nils Gustaf See also:Nordenskiold, of See also:Helsingfors
.
It is remarkable for being strongly dichroic, generally appearing dark See also:green by daylight
and See also:raspberry-red by See also:candle-See also:light, or by daylight transmitted through the stone
.
As red and green are the military See also:colours of See also:Russia, the See also:mineral became highly popular as a See also:gem-stone
.
The dark green crystals are usually cloudy and cracked, and grouped in triplets presenting a pseudo-hexagonal See also:form
.
Alexandrite was found originally in the See also:emerald-
mine of Takovaya, See also:east of See also:Ekaterinburg in the Urals, and afterwards in the See also:gold-bearing sands of the Sanarka in the See also:southern Urals
.
Subsequently it was discovered in greater abundance in the gem-gravels of See also:Ceylon
.
It has been found also in See also:Tasmania
.
Some of the Ceylon alexandrite exhibits, when suitably cut, the See also:Cat's-See also:eye chatoyance, whence it has been called alexandrite cat's-eye
.
(F
.
W
.
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