3.5" Natural Emerald Peridot And Chromium Crystals Minerals On Volcanic Rock Gila, AZ

Location: Gila, Arizona, San Carlos Apache Indian Reservation

Weight: 15.1 Ounces

Dimensions: 3.5 Inches Long, 2.5 Inches Wide, 2.3 Inches Thick 

The item pictured is the one you will receive.

Peridot, the gem-quality form of olivine, is one of Arizona’s most famous natural treasures, with Gila County serving as a key source. The most significant mining area is Peridot Mesa, a volcanic plateau located within the San Carlos Apache Indian Reservation. This site is widely regarded as the leading source of peridot in the United States and has supplied gemstone markets for over half a century.

The mesa itself is composed of layered basalt, formed by ancient lava flows. Embedded within these volcanic rocks are peridot crystals that originated deep in the Earth’s mantle before being transported to the surface by volcanic eruptions. As the lava cooled, the crystals became preserved within the basalt, where they are now recovered as isolated grains and small clusters. The thickness of these basalt layers can vary greatly, reflecting multiple eruptive phases over time.

Mining at Peridot Mesa is conducted under the authority of the San Carlos Apache Tribe, and access is limited to protect both cultural and natural resources. Visitors must obtain a recreation permit from the tribal office along Highway 70 east of Globe. Peridot crystals from this area typically measure between 6 and 13 millimeters, providing high-quality material for cutting and polishing. In addition to its gemstone significance, the mesa is known for seasonal displays of wildflowers, making it a place where geology and natural beauty come together.