Skull Earrings

Rainbow Iris Agate Skull Earrings with Sterling Silver French wire hooks.

Iris agate is a rare, finely banded variety of chalcedony that acts as a natural diffraction grating, splitting transmitted light into a vibrant rainbow spectrum.  It displays vivid blues, purples, greens, and warm hues only when sliced extremely thin and viewed under a direct light source or backlit. 

These agates come from Indonesia.