Rock

The entries on this annotated, structured list of rocks all are items and blocks in Minecraft that: A few fictitious blocks are included in this list; namely, blackstone, deepslate, dripstone, end stone, glowstone, netherrack, and redstone. Their actual nature is up to the player's imagination.
 * 1) bear a resemblance to real-world rocks,
 * 2) share a name with real-world rocks, or
 * 3) are fictitious but fulfill a similar role to rocks.

Rocks in the Overworld

 * – a large, round, hollow pocket found underground with crystals growing from its walls
 * – a lightly coloured volcanic rock, made of very tiny crystals; found in solitary blobs
 * – an unbreakable layer of rock that limits mining past the deepslate layer
 * – a block of cobbles that drops from stone; found naturally where flowing water meets flowing lava; useful for crafting
 * – remains of ancient life that were buried and turned into carbon; used for Torches and Furnace fuel
 * – a dark gray, horizontally layered rock that makes up the deep dark layer of the Overworld, below Y=0; useful for crafting
 * – a rock that dripstone caves occur in
 * – a lightly coloured igneous rock, made of coarse crystals; found in solitary blobs
 * – a sharp, flakey rock that drops from gravel
 * – a pinkish igneous rock, made of coarse crystals; found in solitary blobs
 * – a rich blue rock useful as a pigment
 * – a superhard black volcanic glass; found naturally where lava is flash-cooled by water
 * – a material that can carry signals and activate moving parts
 * – sand turned rock, found at the bottom of almost all sand deposits
 * – a dark colored volcanic rock made of very tiny crystals; found encasing amethyst geodes
 * – the gray rock that makes up the bulk of the Overworld above Y=−7
 * – clay turned into stone, found in colorful layers in the mesa
 * – volcanic ash turned stone; common in deepslate

Rocks in other dimensions

 * – a column-forming volcanic rock that's in the Nether's basalt deltas and soul sand valleys
 * – the unbreakable rock that sandwiches the Nether; also forms portal structures in the End
 * – a material that's in the Nether's basalt deltas; useful for crafting
 * – a hard, pale yellow material that makes up the bulk of the End
 * – a brittle, luminescent material that hangs from ceilings in the Nether
 * – a soft, red material that makes up most of the Nether
 * – a superhard volcanic glass that makes up the Ender Dragon's pillars