Sapphire

Sapphire is a variety of corundum except red. The most valued color is deep blue.

Sapphire
Category: Corundum
Hardness: 9
Specific Gravity: 4
Luster: vitreous
Transparency: transparent to translucent
Crystal System: trigonal
Cleavage: none
Fracture: conchoidal to uneven
Composition: Al₂O₃
Typical Size: small to large
Found In:
LK Sri Lanka
Uses:
  • jewelry
  • watches
Symbolizes wisdom, loyalty, and nobility.