Stone

"This grey stalwart is one of the original Minecraft blocks, added alongside dirt and wood planks on 16 May 2009, while the game was in its very earliest stages of development. In fact, it’s almost as old as the name “Minecraft” itself – before that date, the game was simply known as “Cave Game”, while afterwards it became “Minecraft: Order of the Stone”."

- Duncan Geere

Stone is a block found extremely commonly in the Overworld.

Obtaining
Stone requires a pickaxe to be mined, in which case it will drop cobblestone. When mined without a pickaxe, it will drop nothing. If stone is mined with a Silk Touch enchanted pickaxe, it will drop itself.

Natural generation
Stone makes up the majority of the solid blocks generated. When chunks generate, stone can be found under layers of grass and dirt in most biomes. It can also be seen exposed at the side of mountains in extreme hills biomes.

When the world is generating new chunks, some stone becomes ore, and almost every cavern and mineshaft will generate at stone level.

Water and lava
Stone can also be made by lava flowing on top of water, where the water will be replaced.



Silverfish
Silverfish have the ability to enter and hide in stone, creating a monster egg.

Data values
Stone has the ID name, which it shares with andesite, diorite, and granite, differentiated by its '"block state".

Trivia

 * Stone is the only block with a slab equivalent but no stairs equivalent.