Infinity Stones

Infinity Stones are objects featured in Guardians of the Galaxy. THe most significant stone in Guardians of the Galaxy was the purple stone, the Power Stone

Early history
The infinity stones could only be wielded by beings of powerful stature. One individual, Eson the Searcher wielded all the stones.

Guardians of the Galaxy
The purple infinity stone, the power stone, was sought by many people succh as Peter Quill, Yondu Udonta, and Ronan the Accuser