NL Architects said a sliced amethyst geode is often referred to as a ‘cathedral’, a reference celebrated in the hotel in which ‘a particularly uplifting space comes into being’.

Northern Uruguay is home to one of the largest amethyst deposits in the world – but their formation has long been a mystery.

Large purple amethyst cake sparks wedding cake trend. Three different angles of Rachel Teufel's amethyst geode cake to show the depth of the design. Ali N Garrett Photography/Intricate Icings Cake ...

A 26,000-pound amethyst geode would not be without precedent, either: According to the Guinness Book of World Records, the largest amethyst geode (just shy of 10 feet tall) weighs 28,660 pounds.

Researchers from the University of Göttingen in front of a giant amethyst geode in Uruguay. Geodes like this were discovered in cooled lava flows dating back to the original breakup of the Gondwana ...