The three-meter tall amethyst geode - a hollow rock filled with amethyst crystals - is the main attraction at the Crystal Caves at Atherton, southwest of Cairns. But it's now missing a bit after a ...

The research aims to examine the geological characteristics of these geodes ... rich deposits of amethyst and agate, prized for their aesthetic qualities and widely used in jewelry and decorative ...

Some of the world's largest amethyst geodes come out of Artigas, Uruguay. The earth beneath this region is uniquely suited to producing amethyst. But other than size, what qualities do miners look ...