Opal jewelry shines a magnificent & gleaming opalescent hue. As the official birthstone of October, the name “opal” originates from the Greek word opallis, which meant “to see a change in color.” October’s opal is a sign of hope, faith & confidence. Sourced from Australia (90%), Mexico and Brazil. These stones unveil nearly limitless rainbow-like possibilities, as each one comes in a spectacular play-of-color and combinations. Shop opal rings, earrings, necklaces, and more below.