Deep within a remote private mine, a remarkable discovery recently captured the attention of all who encountered it. Miners, ...

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.

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 ...

Large crystals found in geodes and other rocks are relatively ... and emeralds continue to qualify as "precious." (At one time, amethyst was also considered a precious gem, but large reserves ...