One of the best substitute of blue sapphire .Lapis has been used by man as decoration since prehistoric times, and it hasn't lost its appeal until today. In Vedic Astrology, It is worn as a substitute of Blue Sapphire (Saturn). Lapis lazuli has a lot of medical benefits. It also boosts immune system, lowers blood pressure, purifies blood and soothes inflammation.
- Refractive index: 1.500, 1.670
- Birefringence: -
- Specific gravity: 2.75/ ±0.25
- Crystal system: Cubic
- Hardness: 5-6
- Inclusions- White Calcite, Pyrite etc