1.6" Botswana Dyed Agate Crystal Earrings
925 Solid Silver 
 
The parallel banded variant of the silicate stone chalcedony is known as banded onyx. Agate and onyx are layered chalcedony variations that differ only in the shape of the bands: agate has curved bands, while onyx has parallel bands. Its bands come in a variety of colors, from black to practically every color.