Four rings from the Chalcis treasure dating from 13th-15th century. The Chalcis treasure was buried
in 1470 in Chalcis, Greece - a Venetian trading post - to save them from the Ottoman Turks.
The rings are now at the British Museum, London, UK.
Image from the book 'Intelligible beauty' (2010) edited by Chris Entwistle and Noël Adams