Miners discover a one-of-a-kind amethyst crystal inside a large basalt geode in the Santa Rosa mine in Uruguay’s Artigas ...

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

Amethyst is a violet variety of quartz that has been used as a gemstone for many centuries and is a key economic resource in northern Uruguay. Geodes are hollow rock formations often with quartz ...

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 rare ... and emeralds continue to qualify as "precious." (At one time, amethyst was also considered a precious gem, but large reserves ...