A green or greenish-brown gemstone which glints varying shades of red under artificail light. The gem was discovered in the Ural mountains, Russia, in 1830, on the birthday of Tsar Alexander II. A synthetic form of CORUNDUM exhibits similar colour changes ad is sold in the Middle East as alexandrite, but is of little value.
(from the article `chrysoberyl`) Alexandrite is a remarkable and valued variety that when viewed along the different crystallographic (optical) axes, changes from columbine red to ... The two best known and most widely used varieties of chrysoberyl are alexandrite (transparent) and Oriental cat`s-eye (opaque). Because of its great ... ...Found on http://www.britannica.com/eb/a-z/a/44
a green variety of chrysoberyl used as a gemstoneFound on https://www.encyclo.co.uk/local/20974
A semiprecious gemstone that is from the beryl family and appears to have different colours depending on the light it is viewed in, ranging from red to blue and green. Alexandrite has a hardness of 8.5 on the Mohs ScaleFound on http://www.saffronart.com/sitepages/jewelry/glossary.aspx
Alexandrite is a variety of chrysoberyl found in the mica-slate of the Urals. It was named after Czar Alexander II because it shows the Russian colours of green and red.Found on http://www.probertencyclopaedia.com/browse/HA.HTM
Discovered in 1830 in Russia, and named after Czar Alexander II of who was then Crown Prince of Russia, alexandrite is a form of the mineral chrysoberyl noted for its color change in different forms of light. In sunlight alexandrite looks blue-green, but in indoor (tungsten) light it the same stone changes to reddish-purple. Natural alexandrite wit...Found on http://www.indygem.com/pages/Glossary-of-Terms.html
- a green variety of chrysoberyl used as a gemstoneFound on http://www.webdictionary.co.uk/definition.php?query=alexandrite
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