Namibia Exports of pumice stone, emery, natural corundum, garnet, other natural abrasives to Zambia was US$225 during 2019, according to the United Nations COMTRADE database on international trade. Namibia Exports of pumice stone, emery, natural corundum, garnet, other natural abrasives to Zambia - data, historical chart and statistics - was last updated on May of 2024.