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Soledade is a municipality in Rio Grande do Sul, Brazil. The city is nicknamed the Cidade das Pedras Preciosas meaning the City of Precious Stones or Rare Gems. Much of the amethyst sold in the world comes from the mines of Rio Grande do Sul near Soledade. Most of the factories in Soledade process and sell these stones internationally.
The Empress of Uruguay is the world's largest amethyst geode, standing at a height of 3.27 meters. It is open along its length and weighs 2.5 tons in its current state. It was discovered in 2007 in the Artigas department, Uruguay by the Uruguayan mining company Le Stage Minerals. Its estimated value is US $190,000, although it is not for sale. [1]
Prasiolite (also known as green quartz, green amethyst or vermarine) is a green variety of quartz. Since 1950, almost all natural prasiolite has come from a small Brazilian mine, [citation needed] but it has also been mined in the Lower Silesia region of Poland. Naturally occurring prasiolite has also been found in the Thunder Bay area of ...
An amethyst geode that formed when large crystals grew in open spaces inside the rock. The largest amethyst geode found as of 2007 was the Empress of Uruguay, found in Artigas, Uruguay in 2007. It stands at a height of 3.27 meters, lies open along its length, and weighs 2.5 tons. Amethyst is also found and mined in South Korea. [19]
Large, amethyst-lined geodes are a feature of the basalts of the Paraná and Etendeka traps found in Brazil, Uruguay and Namibia. Geodes are common in some formations in the United States (mainly in Indiana, Iowa, Missouri, western Illinois, Kentucky, and Utah). Geodes are also abundant in the Mendip Hills in Somerset, England, where they are ...
' southern amethyst ') is a municipality in the state of Rio Grande do Sul, Brazil. It borders Planalto, Frederico Westphalen, Cristal do Sul, Rodeio Bonito and Iraí. The municipality is known for the amethyst mines in the area. The center of town has a pyramid that the interior base walls (3 meters) are lined with amethyst.