This is because the outer layers of an amethyst geode have these two stone blocks. If players are exploring caves, they should be able to spot these blocks or a completely open amethyst geode itself.

Geodes, crystals bursting out of a rocky shell ... celestite. The cave has been open to visitors since the Prohibition Era, when the income from tours of it, along with unfermented grape juice ...

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 ...