Iris agate from Horse Mountain, Tennessee; photo by Dave Ault on Flickr (noncommercial use permitted with attribution / no derivative works).
Official State Mineral of Tennessee
Agate was designated the official state stone of Tennessee in 1969, then re-named the state mineral in 2009. Tennessee also recognizes a state rock (limestone). All State Minerals & Rocks
Agate is found only in a few areas of Tennessee. It's a semiprecious gemstone described as a waxy, cryptocrystalline variety of mineral quartz with colors appearing in bands, clouds, or distinct groups. Tennessee also recognize an official state gem (Tennessee river pearl). All State Gemstones
