Orange kyanite from Tanzania

Karan M. Chadwick
Gemological Institute of America
Carlsbad, California

George R. Rossman

Division of Geological and Planetary Sciences
California Institute of Technology

Pasadena, CA 91125-2500, USA


Kyanites from Nani, Loliondo, Tanzania and from Mautia Hill, Tanzania, are described. Their colors range from yellow-orange to orange.

Matia Hill Kyanie
Kyanite from Mautia Hill, Tanzania, that contains Mn3+

Nani Kyanite
Optical spectrum of darker-orange kyanite from Nani, Lolioindo, Tanzania

Gems & Gemology 45, 144-147