Fairburn agate collected east of the Black Hills, western South Dakota; photo by James St. John on Flickr (use permitted with attribution).
Official State Gemstone of South Dakota
South Dakota designated Fairburn agate as the official state gemstone in 1966. Several states have adopted agate as a state symbol. All State Gemstones
This semiprecious stone was first found near Fairburn, South Dakota. Fairburn agate can be found from Orella, Nebraska, to Farmingdale, South Dakota.
Fairburn agate is used in jewelry and is a favorite of rock collectors. South Dakota also recognizes an official state jewelry (Black Hills gold), and a state mineral stone (rose quartz).