Fig. 1
From: Artificial orpiment, a new pigment in Rembrandt’s palette
Rembrandt, Portrait of a Couple as Isaac and Rebecca, known as ‘The Jewish Bride’, c. 1665, oil on canvas (lined), 121.5 × 166.5 cm, Rijksmuseum Amsterdam (SK-C-216). Visible light image (a), and corresponding MA-XRF maps: arsenic (b), cobalt (c), nickel (d), lead (e), mercury (f), iron (g), calcium (h)