Researchers from the University of Göttingen have investigated an intriguing geological phenomenon in Uruguay. These scientists are trying to uncover the mysteries behind the formation of amethyst ...

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 ...

Göttingen University researcher Fiorella Arduin Rode working in open pit mine of the study area, Los Catalanes mining district, northern Uruguay. Along with Ametista do Sul in southern Brazil, these ...

A 660 kg, one-metre high geode containing amethyst crystals and sourced from solidified volcanic ash in Minas Gerais state of Brazil, was today officially welcomed to Canterbury Museum. The geode has ...

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 - a ...

You’re down below the surface, torch in hand, when the stone wall breaks and you see a purple glow. A chime echoes around you and bounces off all the crystals raining down like starlight. This isn’t a ...