×

Legrandite
Legrandite

Andalusite
Andalusite



ADD
Compare
X
Legrandite
X
Andalusite

Legrandite and Andalusite Optical Properties

Optical Properties

Luster

Vitreous
Vitreous, Greasy

Pleochroism

Colorless
strongly trichroic

Dispersion

0.030.02
0.005 1
👆🏻

Transparency

-
Transparent, Translucent

Refractive Index

1.702-1.7401.627-1.650
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
Orthorhombic

Birefringence

0.0600.009-0.010
0 0.296
👆🏻

Clarity

-
Transparent

Legrandite and Andalusite Optic Character

Legrandite and Andalusite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Legrandite and Andalusite Physical Properties like crystallographic symmetry, pleochroism,etc. in the crystal. Some of the optical properties are refractive index, luster, optic character, pleochroism etc. Prominent among these is Legrandite and Andalusite optic character. You might have noticed your gemologist rotating the gemstone while testing it. Rotating a gemstone along its optic axis helps in determining its optic character.

Legrandite and Andalusite Transparency

Similar to their colors, Legrandite and Andalusite transparency can also be used as criteria for their primary identification. Although transparency cannot be the only criteria for gemstone identification, it can efficiently used in gemstone grading. Talking about their transparency, Legrandite is while Legrandite is in appearance.