 Pumice mining has become a large industry on Lipari, and the pale pumice from Lipari is shipped worldwide.In Neolithic times Lipari was, much like Sardinia, one of the few centers of trading in obsidian, a hard black volcanic glass prized by Neolithic peoples for the extremely sharp cutting edges that can be obtained.Lipari's history is rich in incidents as witnessed by the recent retrievals of several necropoli and other archaeological sites.