Image 1 of 3 Image 2 of 3 Image 3 of 3 Aquamarine and Diamond Earrings in 18ct Gold £499.00 Sold Oval cut aquamarine stones, with an unusually shaped diamond set surround. With butterfly backs, all set in 18ct white gold. Sold Added! Oval cut aquamarine stones, with an unusually shaped diamond set surround. With butterfly backs, all set in 18ct white gold.