Nimrud ivories that followed the death of Sargon II in 705 BC or when Nineveh fell and was destroyed in 612 BC. Mallowan's wife was the famous British crime novelist, Agatha Christie (1890–1976), who was fascinated with archaeology, and who accompanied her husband on the Nimrud excavations. Christie helped photograph and preserve many of the ivories found during the excavations, explaining in her autobiography that she cleaned the ivories using a fine knitting needle, an orange stick and a pot of face cream. The collection of ivories uncovered by Mallowan were divided between Iraq and Britain, where they remained at the British
Nimrud ivories and would originally have been covered in gold leaf or ornamented with semi-precious stones such as lapis lazuli. Some pieces still preserve remnants of gold leafing. Many were already centuries old when put in storage and may have fallen out of fashion by that time. The gold may have been removed from the ivories before they were put in storage, or it may have been taken by the Babylonians when they sacked and razed Nimrud in 612 BC. Some of the ivories have Phoenician letters engraved on their back, which it is thought may have been used as guides to