A very visually complex cubic formation Pyrite which is completely natural and has only been polished at its back and fitted with sterling silver.
Pyrite occurs in numerous shapes and habits. The smaller crystal may give off a beautiful glistening effect in light, and the larger crystals may be perfectly formed, including fascinating cubes, pyritohedrons and octahedrons. The perfect cubes of Pyrite embedded in a matrix from the famous Spanish mines are especially treasured among collectors.
This mineral's metallic luster and pale brass-yellow hue give it a superficial resemblance to gold, hence the well-known nickname of fool's gold.