Umba sapphire
Jump to navigation
Jump to search
Template:Short description The Umba sapphire is a unique type of sapphire discovered in 1962 in the Gerevi Hills, north of the Umba River in the Umba Valley of Mkinga District of Tanga Region in Tanzania. Umba sapphires exhibit coloration not common to sapphires found in other parts of the world, and are recovered from the alluvial deposits of the Umba River.
As of November 2006[update]Template:Dated maintenance category (articles)Script error: No such module "Check for unknown parameters"., the Tanzanian government prohibits export of these sapphires.