From Pikmin Fanon
This article relates to the official games. See Pikipedia's "crystal" article for more official information.
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 Particularly: Make the icon for crystal stalactites.
Pikmin 3Hey! Pikmin
Crystal The icon used to represent this obstacle.
P3 Large crystal.png
A large crystal in Pikmin 3, with three rock pellets inside.

Crystals are obstacles that appear as translucent rock. Crystals can contain objects and their main purpose is to serve as blockades. Despite there being different types of crystal-related objects, all of them need Rock Pikmin or bomb rocks to be broken; other Pikmin types will just tap away, only to give up after a bit. Gates made of it are called crystal gates. Some fanon games feature glass, which is usually identical to crystal, and ice, which is similar to crystal but can freeze upon contact.

Large crystal

Large crystals can contain fruits, fragments, data files, and even spray nectar and Onions.

Small crystal

Small crystals don't contain major objects, usually just pellets, but they can block geysers.

Crystal nodule

Crystal nodules are very small crystals that usually need only a single hit from a Rock Pikmin to be destroyed. They are usually weaponized by enemies, most notably Skutterchucks. They are sometimes present in large, seemingly inexhaustive piles called crystal nests.

Crystal stalactite

Crystal stalactites hang from ceilings and fall when leaders or Pikmin pass underneath them, usually with lethal results. To counteract this, simply back away when it begins to fall.

In fanon games

This is where users type their version of crystals.

In Pikmin: Dual Worlds

Duality: an instance of opposition or contrast between two concepts or two aspects, a dualism.
This article or section presents information pertaining to Pikmin: Dual Worlds, a fangame created by Cyan piklord 64.

Crystals appear in Pikmin: Dual Worlds exactly as they do in Pikmin 3. Horned Skutterchucks can obtain crystal nodules, which are found in Feverpitch Forest and Quinacridone Quarry, from certain crystalline structures such as large crystals and crystal nests.