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 BC, Lapis beads have been found at neolithic burials in Mehrgarh, theCaucasus, and even as far from Afghanistan as Mauritania. It was used for the eyebrows on the funeral mask of King Tutankhamun.
Use:Lapis takes an excellent polish and can be made into jewelry, carvings, boxes, mosaics, ornaments, and vases. It was also ground and processed to make thepigment ultramarine, widely used during the Renaissance in frescoes and oil painting. Its usage as a pigment in oil paint largely ended in the early 19th century when a chemically identical synthetic variety became available.

Product Feature
Color: intensive blue
Refractive index:1.502-1.505
The density :2.4-3
The hardness:5-5.5
Chemical formula:(Na,Ca)4-8(AlSiO4)6 (SO4,S,Cl)1-2
Specific gravity :2.7-2.9