These delicate opal stud earrings come in two color ways, milky white and fiery neon-flecked green. In addition to being gorgeous, opals are reputed to have healing properties and the ability to stimulate the creative imagination. These triangles are set in sterling silver with sterling silver posts and backs. Their low profile and geometric simplicity make these earrings look modern, but the materials and craftsmanship are firmly rooted in American history. By Erica Weiner. A percentage of the profits from the sale of each pair of earrings supports TEWA Women United, a non-profit group for Native American women that seeks to address issues of suicide, alcoholism, and sexual violence through female empowerment. Sterling Silver. Opal. Made in the USA.