In the middle of the 14th century, Europe was devastated by an appalling epidemic which killed a third of its population. Accused of having spread the disease, Jewish communities faced terrible persecutions, which often led them to bury their most valuable goods. Two of these hoards, discovered at Colmar in 1863 and at Erfurt in 1998, are discussed and illustrated here. Comprising a great variety of jewelry, gold- and silversmiths' work, and coins, these two hoards constitute an exceptional source for the study of secular metalwork in the 13th and 14th centuries, very few examples of which have otherwise come down to us. They provide precious evidence of the economic activities and daily life of the medieval Jewish communities, but also of their precarious position within Christian Europe. In Erfurt over 1,000 people were killed, the entire Jewish population. Some of the objects, because of their very personal character, are deeply poignant.