Montana Agate is the term given to the stunning chalcedony that was found in the alluvial gavels of the Yellowstone River. While Agate can contain many different colors, this particular stone boasts an opaque backing with tiger-like stripes. Set in a handmade 4-prong sterling silver setting and hanging from 20" chain, this Montana Agate pendant is a wonderful way to bring a piece of nature with you everywhere.