Ross-Simons - 7-7.5mm Pink Cultured Pearl Ring, Diamond Accents in Silver. Size 6. An elegant look priced to please, this pretty 7-7.5mm pink cultured freshwater button pearl ring features a sparkling halo of diamond accents. Crafted in polished sterling silver. 3/8" wide. Pink pearl ring. Pearl birthstones are the perfect gift for June birthdays.