Cordierite

Iolite

Sri Lanka, Sabaragamuwa Province, Ratnapura

Identifier: 34802
Refractive Index: 1.5356
Specific Gravity: 2.62
Optical Character: Biaxial −
Pleochroism: Yellowish gray / Bluish violet
Luster: Vitreous

SUN

I

F

LED

Absorption Depth

0.1

0.3

0.6

1.0

1.5

2.5

4.0

Absorption Spectrum