A heart-shaped mourning pendant depicted in a 1635 painting resurfaced nearly 400 years later; it contains a tassel made from a dead child’s hair

• The jewel commemorates Robert Aston, the six-year-old son of English landowner Sir Thomas Aston, who died in 1634.
• It contains a tassel made from the boy’s blond hair and bears Latin inscriptions expressing his parents’ sorrow.