Alexandrite (color changing Chrysoberyl) crystal. UVLW. TL, Ural Russia

Description

Alexandrite (color changing Chrysoberyl) crystal.
TYPE LOCALITY
Green chromian variety of chrysoberyl (intermediate member of Chrysoberyl-Mariinskite series) that exhibits a color change in natural and artificial light from green to amethystine (Alexandrite effect).
Locality
:
Emerald mines (Izumrudnye Kopi; Malyshevskoye deposit), Malyshevo, Ekaterinburg (Yekaterinburg; Sverdlovsk), Sverdlovskaya Oblast', Urals Region, Russia.
Size:
9 x 8 x 6 mm / 0.35 x 0.31 x 0.23 inch
Weight
: 3 ct
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