Infinity stones is a collective name for the group of the 6 following items:
40+ Infinity Stones Mcu Wiki. They are called gems rather than called infinity stones like they are in the comics. The infinity stones (formerly known as the infinity gems and the soul gems) were powerful artifacts that originated from a primordial universe inhabited by celestials.
Eye Of Agamotto Wikipedia from upload.wikimedia.org
The first stone we encountered in the mcu appeared in captain america: From infinity stones to infinity war, endgame, and beyond. There's a line in age of ultron where thor mentions that all the infinity stones are suspiciously showing up on earth and that the avengers are being used as pawns.
This dimension served as a depository of countless infinity stones, which were delivered to different realities across the multiverse.
Each infinity stone is a capsule of vast power related to its namesake. Infinity war, but what and where are they? Endgame will potentially see the entire movie revolve mind stone: At the dawn of the universe, there was nothing.
