This i s a 2" Indigo Gabbro Sphere, also known as mystic merlinite. It is a composite stone mainly made up of feldspar, quartz, and igneous rock.
It is said to help you take a step back and remove yourself from the day to day concerns and find magic in every day situations.
This piece measures 5.8cm across (2 inches). It comes with the acrylic stand it is pictured on.