Andalusite

Sri Lanka

Identifier: 34773
Refractive Index: 1.6385
Specific Gravity: 3.15
Optical Character: Biaxial −
Pleochroism: Yellowish gray / Orangy red
Luster: Vitreous

SUN

I

F

LED

Absorption Depth

0.1

0.3

0.6

1.0

1.5

2.5

4.0

Absorption Spectrum