18k Yellow Gold Over Sterling Silver Green Jade Greek Key Pendant Necklace, 18" 12x16mm Oval green Jade set in a beautiful gold sterling silver greek key pattern pendant Jade is commonly treated and impregnated with polymers to enhance its color and improve its stability. Imported Striking necklace in 18k yellow gold-plated sterling silver with oval-shaped jade pendant bordered with Greek key detailing Box chain with spring-ring clasp