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Tanzania

Tanzania: Merelani Hills

Sole source of tanzanite worldwide; also produces tsavorite, ruby, sapphire and rare collector gems in the same metamorphic belt.

Tanzanite Tsavorite Blue Sapphire Ruby Spinel Mint Garnet Zoisite Kornerupine
Production data

Gem species from this origin

Tanzanite Premium origin
100% of global production
Mint Garnet
50% of global production
Zoisite
40.9% of global production
Mint Tourmaline Premium origin
35% of global production
Chrome Tourmaline
34% of global production
Sunstone
34% of global production
Hessonite
31.6% of global production
Yellow Sapphire
28% of global production
Kornerupine
27.4% of global production
Tsavorite
27.4% of global production
Pyrope
25.6% of global production
Spessartite
25.2% of global production
Scapolite
25% of global production
Taaffeite
23.7% of global production
Red Zircon
23.7% of global production
Iolite
23% of global production
Color Change Sapphire
22% of global production
Zircon
21.9% of global production
Padparadscha Sapphire
21% of global production
Canary Tourmaline
20% of global production
Garnet Premium origin
20% of global production
Alexandrite
20% of global production
Color Change Garnet
19.5% of global production
Rhodolite
19% of global production
Pink Sapphire
18% of global production
Verdelite
15% of global production
Danburite
15% of global production
Kyanite
15% of global production
Tourmaline
10% of global production
Spinel
10% of global production
Blue Sapphire
8% of global production
Sapphire
8% of global production
Ruby
5.7% of global production

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

Geography

Location