Rhodium-Plated Sterling Silver Onyx | Jade Turtle Stud Earrings Earrings featuring Rhodium-plated Sterling Silver turtle with impregnated a Jade shell gemstone Rhodium-plated Silver "Friction-Back" post with matching backing Due to the natural properties and composition of mined gemstones, pieces may vary slightly in size, shape, weight and color. Jade is commonly treated and impregnated with polymers to enhance its color and improve its stability. Imported