Tutankhamun's meteoric iron dagger

Tutankhamun's meteoric iron dagger, also known as Tutankhamun's iron dagger and King Tut's dagger, is an iron-bladed dagger from the tomb of the ancient Egyptian Pharaoh Tutankhamun (reigned c. 1334–1325 BC). As the blade composition and homogeneity closely correlate with meteorite composition and homogeneity, the material for the blade is determined to have originated by way of a meteoritic landing. The dagger is currently displayed at the Egyptian Museum in Cairo. Since the 1960s, the high nickel content in the blade has been accepted as indicative of meteoric origin. A more recent study published in June 2016 derived from x-ray fluorescence spectrometer analysis show that the blade's composition is mostly iron (Fe) and 11% nickel (Ni) and 0.6% cobalt (Co). This means its composition is placed within the median of a group of 76 previously discovered iron meteorites. The nickel content in the bulk metal of most iron meteorites ranges from 5% to 35%, whereas it never exceeds 4% in historical iron artifacts from terrestrial ores produced before the 19th century. Also, the nickel to cobalt ratio of this blade is comparable to that of iron meteorite materials. At the time of King Tutankhamun's mummification in approximately 1323 BC (the Bronze Age), iron smelting and manufacture were rare. Iron objects were used for only artistic, ornamental, ritual, gift giving, and ceremonial purposes as well as for pigmentation. Hence, iron during this age was more valuable or precious than gold. Iron artifacts were given as royal gifts during the period directly preceding Tutankhamun's rule (i.e., during the reign of Amenhotep III). Determining iron's occurrence throughout the very ancient past – such as obtaining, smelting, and introducing into various civilizations – has long been a topic of scholarly study and discussion. From the late Neolithic era to the Bronze Age, ancient Eastern Mediterranean cultures used iron infrequently. The existence of smelted iron objects during this period has been shown to be uncommon or rare, and believed to have been produced from the ore found in meteorites.