Most of the peridot sold in the world comes off one mesa in Arizona. Peridot Mesa on the San Carlos Apache Reservation is studded with the green olivine in a young basalt flow, and it is the largest peridot deposit on Earth. Be very clear: this is SOVEREIGN TRIBAL LAND and collecting is controlled entirely by the San Carlos Apache, mined by tribal members; outsiders do not dig here. Buy San Carlos peridot from the tribe and the Globe-area dealers. Gila County.
Peridot (Arizona)
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Other places on the map within a couple of hours.