Where it's found:
Amethyst produced abundantly in Brazil within large geodes in volcanic rocks.
Also mined in South Korea; world's largest opencast vein in Lower Austria.
Fine amethyst from Russia; Zambia leads global production at 1000 tons annually.
Pictured: Amethyst geode formed by large crystals growing in rock voids.
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Amethyst occurs across many U.S. locations.
Includes Mazatzal Mountains in Gila and Maricopa Counties, Arizona; Red Feather Lakes near Ft. Collins, Colorado; Amethyst Mountain, Texas; Yellowstone National Park.
Also found in Pennsylvania, North Carolina, Maine, Wisconsin, Michigan.
North America's largest amethyst mine is in Thunder Bay, Ontario.