Photos of the Day: Orthodox Christians and Protesters

London, UK

A member of Sotheby’s staff holds aloft the Farnese Blue, a 6.16-carat diamond that is being auctioned for the first time after remaining in the same family for more than 300 years
Photograph: Guy Bell/REX/Shutterstock

Budapest, Hungary

Metallica perform during a concert at the Papp László Budapest Sports Arena
Photograph: Balazs Mohai/EPA

Gaza Strip

A boy takes part in the six-week protest by Palestinians along the border with Israel
Photograph: Khalil Hamra/AP