Finding amethyst geodes in Minecraft, though, is no easy feat, as they're only about 20 blocks wide, and are spread out underground. One of the best way to find them is underwater, ...

Another method of finding amethyst geode is via branch mining between Y levels 30 and -58. Geodes may be discovered cracked open or fully undamaged and covered. Ad.

Although Amethyst Geodes can spawn as deep as Minecraft Diamonds, you don’t necessarily have to dig that deep, as Amethyst geodes can spawn between Y-level -64 and Y-level 30.

But most of the time, the amethyst geode will expose at least 1 side to any surrounding surface. So if you’re in a big cave, turn on the brightness setting and look around a little bit.