Οpsidianos

From the Neolithic ages , the merchandise of Milos developed a great deal through the exportation in the great area of the Mediterranean Sea of a well known stone called Opsidianos. A volcanic black stone used by the locals to manufacture knives and others objects. Opsidianos from Milos was found in prehistoric cities in Peloponese, Crete and in Cyprus and that is proven in the naval transportation noted before 7000B.C.