Tourmaline

Dravite

Mozambique

Identifier: 33635
Refractive Index: 1.6500
Specific Gravity: 3.04
Optical Character: Uniaxial −
Pleochroism: Pinkish yellow / Pinkish 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