Corundum

Sapphire

Sri Lanka

Identifier: 33074
Refractive Index: 1.7600
Specific Gravity: 3.99
Optical Character: Uniaxial −
Pleochroism: Yellowish brown / Orangy brown
Luster: Vitreous

SUN

I

F

LED

Absorption Depth

0.1

0.3

0.6

1.0

1.5

2.5

4.0

Absorption Spectrum