Alexandrite is a chrysoberyl mineral made up of aluminum oxide, beryllium, and trace amounts of chromium. It forms in volcanoes as a result of lava flows.
This beautiful stone with a distinctive property can be found in Russia, Brazil, Madagascar, or Burma. The best alexandrite specimens change color depending on the light to which they are exposed. When exposed to light, alexandrite appears green or blue. It turns violet or even purple when exposed to artificial light. As a result, this stunning gem is said to be emerald by day and ruby at night.
This stone also displays different colors depending on the angle of the viewer. This phenomenon is called pleochroism. This refers to the ability to absorb light wavelengths differently depending on their angle.
Alexandrite has a hardness of roughly 8.5 on the Mohs scale, which is used to determine mineral hardness. As a result, it is a strong, long-lasting, and expensive stone. The finest alexandrites can be as valuable as diamonds.
The most stunning alexandrites were discovered in Russian deposits, which are now depleted.