Claudia Wagner is Director of the gems databases at the Beazley Archive in the University of Oxford and Senior Research Lecturer at Lady Margaret Hall, Oxford. She is joint author, with John Boardman, of seven books devoted to the study and publication of ancient gems, including The Guy Ladrière Collection of Gems and Rings (2015) and The Beverley Collection of Gems at Alnwick Castle (2016), both written with Diana Scarisbrick.