Spinels come in vivid colours that span the spectrum. They take on different shades, from classic ruby to elegant sapphire. In recent years, spinels from Burma and Tanzania (Mahenge) have been gaining well-deserved recognition and are preferred in gem trade among others.
Mohs Scale Hardness
7.5 - 8.0
Specific Gravity
3.58 - 3.61
Birefringence
None
Refractive Index
1.712 - 1.736
