Chrysoberyl Var Alexandrite

This exceptional alexandrite specimen from the renowned Carnaíba Mine represents the rarest form of chrysoberyl. Known as "emerald by day, ruby by night," this remarkable gemstone displays dramatic color-changing properties - appearing reddish-purple under incandescent light and transforming to deep green in natural sunlight.

Carnaíba alexandrites have been intermittently produced since the early 1980s and are celebrated for their exceptional crystal sharpness and distinctive cyclic twinning formations. The characteristic deep coloration typical of this locality often requires strong illumination to fully appreciate the remarkable color-change effect, which occurs due to alexandrite's unique ability to transmit both green and red light equally.

This specimen represents a world-class example from one of Brazil's most important alexandrite-producing localities, making it an essential addition for collectors specializing in color-change minerals or premium Brazilian specimens.

Carnaiba mining district, Pindobaçu, Bahia, Brazil