Ross-Simons - 4mm Cultured Pearl Tennis Bracelet in 18kt Gold Over Sterling. 7". An RS exclusive. Luminous pearls are getting in on the classic tennis design! On this sleek and slender bracelet, 4mm cultured freshwater button pearls gleam side by side in polished 18kt yellow gold over sterling silver. Double-latch safety. Box clasp, white pearl tennis bracelet. Pearl birthstones are the perfect gift for June birthdays.