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
Assyria visible, whether the image were viewed frontally or in profile. Although works of precious gems and metals usually do not survive the ravages of time, some fine pieces of Assyrian jewelry were found in royal tombs at Nimrud. There is ongoing discussion among academics over the nature of the Nimrud lens, a piece of quartz unearthed by Austen Henry Layard in 1850, in the Nimrud palace complex in northern Iraq. A small minority believe that it is evidence for the existence of ancient Assyrian telescopes, which could explain the great accuracy of Assyrian astronomy. Other suggestions include its use as