Full caption:
Portable Altar of Countess Gertrude, c. 1045. Germany, Lower Saxony?, Romanesque period, 11th century. Gold, cloisonné enamel, porphyry, gems, pearls, niello, wood core; 10.5 x 27.5 x 21.0 cm. The Cleveland Museum of Art, Gift of the John Huntington Art and Polytechnic Trust 1931.46
For ceremonial crosses in second image see MAVCOR Object# 13147