Mitchell Zephier, an enrolled member of the Lower Brule Sioux Tribe began designing and making jewelry in the early 1970s; learning his techniques from Frank Standing High and a Zuni jeweler.

Mitch works with his brother Roger Herron, who does the fine cutting and stamping, and Belle Star Boy (Rosebud Sioux), who does the engraving and inlay work.

Together they design and create unique jewelry in sterling silver and brass that incorporates traditional Northern Plains designs. Their jewelry is often inlaid with crushed materials such as pipestone, alabaster, lapis or malachite mixed with epoxy as a holding agent.