This is a Cube within an Octahedron. As platonic solids they are complementary and represent the earth and air element.
This object represents a true equilibrium. Circles and straight lines (female and male) in a balanced arrangement... Two cube-octagon pairs contained within each other.
Place it on your heart and you will feel the effect.
I am not going to tell you how powerful this object is.
You just have to find out for yourself. :-)