Martini-Set Round Emerald Stud Earrings. These pretty emerald solitaire stud earrings in Platinum embody timeless elegance. The gorgeous gemstones are mounted in a three-prong martini setting and draw the eye with their lush green brilliance. Shop Now and Get Flat £148 Off* on Martini-Set Round Emerald Stud Earrings + Guaranteed Delivery By Christmas + Free Express Shipping.