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Andalusite
Andalusite

Pollucite
Pollucite



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Andalusite
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Pollucite

Andalusite and Pollucite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Greasy
Vitreous, Greasy
1.2 Pleochroism
strongly trichroic
Not Available
1.3 Dispersion
Albite Optical ..
0.02
Rank: 23 (Overall)
0.01
Rank: 26 (Overall)
Fluorite Optical Properties
1.4 Transparency
Transparent, Translucent
Transparent, Translucent
1.5 Refractive Index
1.627-1.650
1.517-1.525
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic
Isometric
1.8 Birefringence
0.009-0.010
Not Available
1.9 Clarity
Transparent
Transparent

Andalusite and Pollucite Optic Character

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

Similar to their colors, Andalusite and Pollucite 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.