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Tennessee State Mineral

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