Lapis lazuli , , or lapis for short, is a deep blue semi-precious stone that has been prized since antiquity for its intense color. Lapis lazuli was being mined in the Sar-i Sang mines and in other mines in the Badakhshan province in northeast Afghanistan as early as the 7th millennium BCE. Lapis beads have been found at neolithic burials in Mehrgarh, the Caucasus, and even as far from Afghanistan as Mauritania. It was used for the eyebrows, among other features, on the funeral mask of Tutankhamun (1341–1323 BCE).