Gold Pyrite (fools gold) has formed a layer of tiny crytaline cubes over the suface of Ammolite. Pyrite is an iron sulfate and Ammolite is a shell that fell to the ocean bottom millions of years ago and fossilized . A combination of Nature and Earth's interior mystery. A Golden Free-form Freshwater pearl adds more to the mystery. Bezel setting, with hammered textured frame.