Amethyst Nest
cataclysm:amethyst_nest
Biomes
Amethyst Nest generates in these biomes and biome tags:
minecraft:lush_cavesPlacement
Amethyst Nest: the world places one attempt in every 32×32-chunk region, at least 8 chunks apart; it shares its placement set with other structures (weight 1).
Mob spawning
This structure overrides spawning for: monster.