Byzantine 'Greek Fire' grenade, 8th-10th century, in ceramic, with short neck and tapered body, with circle and line decoration, length 17 cm Literature: both Byzantine and Arab soldiers utilised 'Greek Fire' grenades made from stone and ceramic jars. They were mainly used as ship to ship weapons. For further discussion see J.H Pryor & E.M. Jeffreys, the age of the Dromon. The Byzantine Navy ca. ,500-1204, Leiden & Boston, 2006, pp.607-9.