Lunettes of Three Saints

6th century
Mosaic
The Archiepiscopal Chapel, Ravenna

Bottom to top: St. Cecilia, St. Eugenia, St. Euphemia.

More of St. Cecilia
More of St. Eugenia
More of St. Euphemia

This image in full resolution

Photographed at the chapel by Claire Stracke, shared under Attribution-NonCommercial-ShareAlike license.