Imports In 2018, Bhutan imported $40 in Emery, natural corundum/garnet, including heat treate, becoming the 0th largest importer of Emery, natural corundum/garnet, including heat treate in the world. At the same year, Emery, natural corundum/garnet, including heat treate was the 0th most imported product in Bhutan. Bhutan imports Emery, natural corundum/garnet, including heat treate primarily from: N/A.