The South American country of Uruguay is notable for its rich, high-quality gemstones sought after by collectors worldwide. Many geological mines there still operate, producing some of the finest examples of amethyst in the world. Amethyst is a semi-precious gemstone which occurs in geodes, like this one, formed by volcanic eruptions. The largest amethyst geode ever found, the “Empress of Uruguay,” is 11 feet tall and weighs about as much as a car!
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