Re-import facility at zero duty for cut and polished diamonds extended automatically for affected exporters, granting three-month relief. Para 4.44 permits eligible exporters or authorised Indian offices/agencies to export cut and polished diamonds (each of 0.25 carat or above) to designated laboratories with a re-import facility at zero duty within three months of export, subject to Central Board of Customs & Excise guidelines; the amendment automatically extends the re-import period by three months for cases whose re-import period was expiring in the specified early to mid 2020 window.