Duty exemption for unset raw pearls and rough diamonds subject to licensed import and bond obligations. Duty exemption applies to imported unset raw pearls, rough diamonds and other precious or semi-precious stones under Chapter 71, subject to import under specified Replenishment, Gem Replenishment, Diamond Imprest or Bulk Licences as per the Export and Import Policy and Handbook of Procedures. Imports under Diamond Imprest and Bulk Licences require execution of a bond obliging the importer to meet export obligations or to account for disposals and, on failure, to pay duty attributable to non-fulfilment with interest.