A stone may be the type of motionlessness or fixity, or of hardness, and thus insensibility (as in stone-blind) or stupidity.
A stone is the emblem of St Stephen and St Jerome.
set in stone used to emphasize that something is fixed and unchangeable (often in negative contexts). The allusion is to the Ten Commandments handed down to Moses on tablets of stone (Exodus 31:18).
Stone Age a prehistoric period when weapons and tools were made of stone or of organic materials such as bone, wood, or horn; it covers a period of about 2.5 million years, from the first use of tools by the ancestors of man (Australopithecus) to the introduction of agriculture and the first towns.
stone-dead hath no fellow proverbial saying, mid 17th century; traditionally used by advocates of the death penalty, or to suggest that only when a dangerous person is dead can one be sure that they will cause no further trouble.
Stone of Scone the stone on which medieval Scottish kings were crowned at Scone. It was brought to England by Edward I and preserved in the coronation chair in Westminster Abbey, and returned to Scotland in 1996. Also called Coronation stone, Stone of Destiny.
a stone's throw a short distance.
See also you cannot get blood from a stone, cast the first stone, heart of stone, kill two birds with one stone, leave no stone unturned, white stone.