The 2.5 tons Empress of Uruguay is slightly less impressive after a tourist pinched a piece of the world's largest amethyst on show in Queensland, Australia. The three-meter tall amethyst geode ...

Amethyst geodes in Uruguay have been found in cooled lava flows, which date from the original breakup of the supercontinent Gondwana around 134 million years ago. However, their formation has ...

Amethyst is one of the most abundant crystals in the world, but the most prized pieces can cost almost a million dollars. Some of the world's largest amethyst geodes come out of Artigas, Uruguay.