Hand crafted from sterling silver and a mix of semi precious stones and shell fused in bronze. These gorgeous earrings are designed in Australia by Makers & Providers and ethically made by skilled artisans in Mexico. Turquoise and spiny oyster shell offcuts are fused together with bronze and then recut into this clean and contemporary shape, before being set in sterling silver. Due to this process each stone and pair of earrings is totally unique. Approximate dimensions of onyx drop: 30mm x 7mm Spiny Oyster Turquoise is a composite gemstone made by combining three of nature's treasures: the spiny oyster shell, turquoise and bronze. Spiny oyster, a deep-sea dweller, has been harvested for centuries by Native Americans for both food and the brilliant shells that were once used as currency and adornment.