What is Alexandrite?
Alexandrite is a variety of chrysoberyl that displays a color change depending on the lighting conditions. It’s primarily found in Russia, Sri Lanka, and Brazil. Alexandrite is often used as a gemstone and is popular for its unique color-changing ability.
Alexandrite is a rare and unique gemstone that changes color depending on the lighting conditions. Its unique appearance makes it a popular choice for jewelry, especially rings and pendants.
|Chemical Classification||Inorganic - Oxide (Chrysoberyl)|
|Color||Changes from green in daylight to reddish-purple under incandescent light.|
|Transparency||Transparent to translucent.|
|Occurrence||Russia, Brazil, and Sri Lanka.|
|Formation||Found in granitic pegmatites and mica schists.|
|Specific Gravity||Approximately 3.73.|
|Diagnostic Properties||Color change under different lighting.|
|Pleochroism||Strong; different colors can be observed when viewed from different angles.|
|Crystal System||Orthorhombic (variety of Chrysoberyl)|
|Optical Properties||Biaxial (+)|
|Refractive Index||1.741 - 1.760|
|Birefringence||0.008 - 0.010|
|2V angle||Measured: 85° to 90°|