last edited: 2/26/18 number of photos: 2
Alexandrite is chrysoberyl, BeAl2O4
Alexandrite is famous for its color change under different lighting
conditions. This gem appears greenish under sunlight and reddish
under tungsten light due to the presence of chromium.
Alexandrite was discovered in 1830 in Russia and was named after
Czar Alexander II.
alexandrite, faceted: A B
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Just credit photos to R.Weller/Cochise College.