13-18mm Cultured Baroque Pearl, 18.20ct t.w. Natural Diamond Necklace In Two-Tone. 40" We traveled all the way to India to find this magnificent 13-18mm cultured freshwater pearls necklace. Lush and lustrous, free-form pearls trail with an astounding 18.20 ct. t.w. of pave natural diamonds set upon dramatic beads. Necklace presented in 14kt yellow gold and black rhodiumed sterling silver. Pearl birthstones are the perfect gift for June birthdays.