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Rhodolite
Rhodolite

Andalusite
Andalusite



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Rhodolite
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Andalusite

Rhodolite and Andalusite Optical Properties

Optical Properties

Luster

Greasy, Vitreous
Vitreous, Greasy

Pleochroism

None
strongly trichroic

Dispersion

0.030.02
0.005 1
👆🏻

Transparency

-
Transparent, Translucent

Refractive Index

1.7601.627-1.650
1 3.25
👆🏻

Optic Character

-
-

Crystal System

cubic
Orthorhombic

Birefringence

0.010-0.0140.009-0.010
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
Transparent

Rhodolite and Andalusite Optic Character

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

Rhodolite and Andalusite Transparency

Similar to their colors, Rhodolite 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, Rhodolite is while Rhodolite is in appearance.