Imports In 2020, Saint Vincent and the Grenadines imported $35 in Leucite, nepheline and nepheline syenite, becoming the 0th largest importer of Leucite, nepheline and nepheline syenite in the world. At the same year, Leucite, nepheline and nepheline syenite was the 0th most imported product in Saint Vincent and the Grenadines. Saint Vincent and the Grenadines imports Leucite, nepheline and nepheline syenite primarily from: N/A.