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Tanzania

Tanzania: Umba Valley

Diverse alluvial deposit known for color-change sapphires, Umba padparadscha, rhodolite and malaia garnet.

Sapphire Ruby Rhodolite Malaia Garnet Color Change Garnet Padparadscha Sapphire Tourmaline Zircon
Production data

Gem species from this origin

Malaia Garnet
55% of global production
Chrysoprase
15% of global production
Teal Sapphire
13% of global production
Padparadscha Sapphire
13% of global production
Purple Sapphire
12% of global production
Color Change Sapphire
11% of global production
Parti Sapphire
9% of global production
Green Sapphire
6% of global production

Percentages are estimated market-origin shares of global production. Not audited mine statistics.

Geography

Location