The Whitney Alexandrite is one of the finest known alexandrites from the Hematita Mine in Minas Gerais, Brazil. This spectacular gem weighs 17.08 carats, and appears a raspberry color under incandescent light and a teal color in daylight. The Whitney Alexandrite is a gift from Coralyn Wright Whitney to the Smithsonian's fine gem collection in 2009.
Alexandrite is a very rare and highly valuable gemstone, and until recently was extremely difficult to obtain due to its rarity. However, new sources in Brazil and Tanzania have made this gemstone available and more mainstream on the gemstone market.