Amethyst Geode

An amethyst geode is a structure-like feature found in the underground of the Overworld. Amethyst geodes contain smooth basalt and calcite and are the main sources of amethyst shards and blocks of amethyst.

Amethyst geodes generate between Y=-58 and Y=30. Each chunk has a 1⁄24 chance to attempt to generate a geode.

Amethyst geodes consist of three layers: an outer layer of smooth basalt, a middle layer of calcite, and a hollow layer of primarily amethyst blocks, with 8.3% replaced by budding amethyst blocks instead. Amethyst crystals generate within the structure on budding amethyst. Amethyst geodes have a 95% chance of generating with a crack, exposing their inside. Caves, aquifers, and canyons may be overridden by amethyst geodes,[1] and as such are often obstructed by them.