Like all quartz, amethyst is fairly hard, making it perfect to wear as jewelry, which humans have been doing for thousands of years. Amethyst is often found in geodes within organic rocks.

Geodes and jewellery. Some of the world’s most stunning geodes are amethysts. If you collect crystals, you might want to add an amethyst geode in your collection for its sheer beauty.

Geodes are hollow rock formations often with quartz crystals, such as amethyst, inside. Amethyst geodes in Uruguay have been found in cooled lava flows, which date from the original breakup of the ...

Amethyst geodes—some stretching 5 m long—dot the ancient lava flows of Uruguay’s Los Catalanes mining area. The geodes contain calcite, colorless quartz, and agate, another quartz mineral.

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 ...

Amethyst is a violet variety of quartz which 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 ...

Amsterdam-based NL Architects is envisioning a chain of striking hotel towers with a design based on the ‘positive powers’ of amethyst, a variety of quartz used in jewellery.

He originally wanted a 5.5m tall smoky quartz geode but his 28-year-old daughter Manya talked him into buying a 5.5m amethyst geode, big enough to sit inside.

Amethyst geodes in Uruguay have been found in cooled lava flows, which date from the original breakup of the supercontinent Gondwana around 134 million years ago. However, their formation has ...