ready for sale. Credit: Fiorella Arduin Rode The amethyst geodes, of rare beauty, form in volcanic rock cavities. How did these purple crystals emerge millions of years ago, following the breakup of ...

Players have dedicated hours searching for these geodes that contain the precious amethyst crystals, an important resource. These precious structures can be quite elusive and might take a while to ...

People view the 12-foot tall amethyst geode from Uruguay hosted at the American ... highlighting their scientific and natural value. The amethyst crystals are found in lava flows, which date ...