Among the precious objects kept in the Palatine Chapel Treasury are valuable ivory artefacts: fifteen caskets and a crosier with precious stones. The caskets contained documents and relics and feature both engraved and carved decorations. However, there are also Islamic-style ebony objects from the churches, such as chests, combs, curls of pastorals, dating from around the 12th-13th centuries; embossed silver vases; chalices; glass cruets; urns; a Mesopotamian seal; monstrances; reliquaries and sacred vestments, including silk, embroidered with gold and silver. Almost all the riches are from the Norman-Swabian period.
