South Sea cultured pearls: big South Sea cultured pearls (approximately 13 mm), farmed in Australia, Indonesia, as well as the Philippines, range in colour from white to black. they're able to have a wonderfully round https://www.ebay.com.au/str/pacificpearlsinternational?mkcid=1&mkrid=705-53470-19255-0&siteid=15&campid=5339072275&customid=&toolid=10001&mkevt=1