Ross-Simons - 10-11mm Cultured Button Pearl Drop Earrings in 14kt Yellow Gold. The epitome of understated sophistication. These drop earrings highlight the singular beauty of 10-11mm cultured freshwater button pearls. Set in 14kt yellow gold with a hanging length of 3/4". Leverback, pearl drop earrings. Pearl birthstones are the perfect gift for June birthdays.