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ALEXANDRITE

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Originally appearing in Volume V01, Page 576 of the 1911 Encyclopedia Britannica.
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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 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.

End of Article: ALEXANDRITE

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