Lapis Lazuli Gemstone - لاجورد

Specific Gravity ~ 2.80

Hardness ~ 5.5 on Mohs scale

Refractive Index ~ 1.50

Aluminum 27.7%

Mica 1.5%

Calcite 20.46%

Pyrite 0.34%

Silica 50%

Sagittarius, Pisces/Jupiter