Polidoro da Caravaggio, The Betrayal of Christ, c. 1524
Lent from the Royal Library by Her Majesty Queen Elizabeth II

This drawing is a design for a rock-crystal oval attributed to Valerio Belli. Probably made for Pope Clement VII in 1525, the oval decorated the base of an engraved crystal crucifix. In the image, Judas betrays Christ with a kiss, identifying him for the soldiers of Pontius Pilate.

Copyright © National Gallery of Art, Washington D.C.