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Andalusite
Andalusite

Rhodolite
Rhodolite



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Andalusite
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Rhodolite

Andalusite and Rhodolite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Greasy
Greasy, Vitreous
1.2 Pleochroism
strongly trichroic
None
1.3 Dispersion
0.02None
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Translucent
Gemmological Tables (2004)
1.5 Refractive Index
1.627-1.6501.760
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic
cubic
1.8 Birefringence
0.009-0.0100.010-0.014
Achroite
0 0.296
1.9 Clarity
Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Andalusite and Rhodolite Optic Character

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

Andalusite and Rhodolite Transparency

Similar to their colors, Andalusite and Rhodolite 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, Andalusite is Translucent and Transparent while Andalusite is Translucent and Transparent in appearance.