Alexandrite Gemstone | Natural Alexandrite Stone - GIA
Often described by gem aficionados as “emerald by day, ruby by night,” alexandrite is the very rare color-change variety of the mineral chrysoberyl. Originally discovered in Russia’s Ural Mountains in the 1830s, it’s now found in Sri Lanka, East Africa, and Brazil, but fine material is exceptionally rare and valuable.
Geographic Origin Determination of Alexandrite
Jan 31, 2020 · The geographic source of this rare color-change gem has a significant impact on value. Trace element chemistry profiles allow GIA to accurately determine origin for alexandrite from several countries.
Alexandrite History and Lore - GIA
Abundant alexandrite deposits were first discovered in 1830 in Russia’s Ural Mountains. Those first alexandrites were of very fine quality and displayed vivid hues and dramatic color change. The gem was named after the young Alexander II, heir apparent to the throne.
Alexandrite Care and Cleaning Guide - GIA
Learn about alexandrite's durability and how to care for your alexandrite jewelry.
Alexandrite Description - GIA
This 7.19-carat alexandrite was cut to feature its beautiful color change. When the light source changes from daylight to incandescent light, the gem’s color changes from bluish green to reddish purple. Alexandrite, with its chameleon-like qualities, is a rare variety of the mineral chrysoberyl.
Alexandrite - Gemological Institute of America
Three alexandrite crystals grew through one another to create a star. Alexandrite can change colors under different kinds of light. For example, it can be green in daylight but can change to a brownish or purplish red under a lamp.
Alexandrite Gemstone | Natural Alexandrite Stone - GIA
Alexandrite Gemstone is a rare variety of the mineral Chrysoberyl & is a strongly pleochroic gem. Color-changing alexandrite is nature’s magic trick.
Pearl, Alexandrite, Moonstone Birthstones - GIA
Pearl, Alexandrite, Moonstone are the three birthstones for June. Learn about the history and where these three June birthstones can be found, so that you can buy the perfect June birthstone for you or a loved one.
color-change phenomenon, alexandrite has been highly sought after and is one of the most valuable gemstones in the trade. Alexandrite, particularly fine-quality material, is also very scarce; it has generally been a byproduct of mining other major colored stones. Overall produc-tion statistics are hard to evaluate. It has been mined
GIA Gem Encyclopedia | Complete List Of Gemstones
Green in sunlight. Red in lamplight. Color-changing alexandrite is nature’s magic trick.