Because Colorado’s mountains are rich in minerals, there are many gemstones to be found in our state, but only one has the distinction of being named Colorado’s state gemstone – the aquamarine. This light blue to green mineral was designated our state gemstone in 1971; it is found primarily at Mount Antero and White Mountain in Chaffee County. For more about Colorado minerals, see the following Colorado Geological Survey publications, available from our library: An Introduction to Mining & Minerals in Colorado; and Messages in Stone: Colorado’s Colorful Geology. See also The Minerals of Colorado and Area Locations from the Colorado Bureau of Mines.
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