06/02/2026
Described as "emerald by day, ruby by night," alexandrite is a rare variety of mineral that changes color from bluish green in daylight to purplish red under incandescent light.
So rare, in fact, natural Alexandrite is rarer than Diamonds and more costly than Emerald, Ruby, and Sapphire.
The Alexandrite gemstone is known for its unique ability to change in color. Learn about its history, origins, value, durability, and more.