|Alexandrite undergoes dramatic shifts in color depending on light. A variety of Chrysoberyl, alexandrite color-changing properties are due to a rare combination of minerals that includes titanium, iron and chromium. Originally discovered in Russia’s Ural Mountains in the 1830s, it’s now found in Sri Lanka, East Africa, and Brazil.|
Fine, gem quality material is exceptionally rare and valuable. Alexandrite's mohs hardness is about 8.5.