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Linarite
Linarite

Andalusite
Andalusite



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Linarite
X
Andalusite

Linarite and Andalusite Optical Properties

Optical Properties

Luster

Sub-Adamantine, Vitreous
Vitreous, Greasy

Pleochroism

X = pale blue; Y = blue; Z = Prussian blue
strongly trichroic

Dispersion

0.050.02
0.005 1
👆🏻

Transparency

Transparent
Transparent, Translucent

Refractive Index

1.809-1.8591.627-1.650
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
Orthorhombic

Birefringence

0.0500.009-0.010
0 0.296
👆🏻

Clarity

Transparent
Transparent

Linarite and Andalusite Optic Character

Linarite and Andalusite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Linarite 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 Linarite 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.

Linarite and Andalusite Transparency

Similar to their colors, Linarite 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, Linarite is Transparent while Linarite is Transparent in appearance.