Imports In 2017, Guam imported $4.88k in Marble, Travertine and Alabaster, becoming the 0th largest importer of Marble, Travertine and Alabaster in the world. At the same year, Marble, Travertine and Alabaster was the 0th most imported product in Guam. Guam imports Marble, Travertine and Alabaster primarily from: N/A.