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Andalusite
Andalusite

Clinochlore
Clinochlore



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Andalusite
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Clinochlore

Andalusite and Clinochlore Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Greasy
Pearly, Greasy
1.2 Pleochroism
strongly trichroic
Distinct: light yellow-green to light bluE
1.3 Dispersion
0.02NA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Translucent
Transparent
1.5 Refractive Index
1.627-1.6501.571-1.597
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Biaxial/+
1.7 Crystal System
Orthorhombic
Monoclinic Prismatic H-M Symbol (2/m) Space Group: C 2/m
1.8 Birefringence
0.009-0.010Not Available
Achroite
0 0.296
1.9 Clarity
Transparent
Transparent

Andalusite and Clinochlore Optic Character

Andalusite and Clinochlore optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Andalusite and Clinochlore 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 Clinochlore 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. Clinochlore has Biaxial/+ character.

Andalusite and Clinochlore Transparency

Similar to their colors, Andalusite and Clinochlore 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.