3. Pearl surface texture: pure pearls can have a wide variety of abrasions. negligible flaws never seriously detract from the pearl's value. Duties certainly are a form of tax gathered on imports by a country's customs https://www.ebay.com.au/str/pacificpearlsinternational?mkcid=1&mkrid=705-53470-19255-0&siteid=15&campid=5339072275&customid=&toolid=10001&mkevt=1