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Andalusite
Andalusite

Moissanite
Moissanite



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Moissanite

Andalusite and Moissanite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Greasy
Adamantine
1.2 Pleochroism
strongly trichroic
NilArthur Thomas
1.3 Dispersion
0.020.10
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Translucent
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.627-1.6502.648-2.691
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic
6H polytype
1.8 Birefringence
0.009-0.0100.043
Achroite
0 0.296
1.9 Clarity
Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Andalusite and Moissanite Optic Character

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

Similar to their colors, Andalusite and Moissanite 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.