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Adularia
Adularia

Andalusite
Andalusite



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Adularia
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Andalusite

Adularia and Andalusite Optical Properties

1 Optical Properties
1.1 Luster
Not Available
Vitreous, Greasy
1.2 Pleochroism
Not Available
strongly trichroic
1.3 Dispersion
NA0.02
Fluorite Optical Properties
0.007 1
1.4 Transparency
TransparentArthur Thomas, Gemstones (2009)
Transparent, Translucent
1.5 Refractive Index
1.518-1.5361.627-1.650
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
Orthorhombic
1.8 Birefringence
0.005-0.0080.009-0.010
Achroite
0 0.296
1.9 Clarity
TransparentArthur Thomas
Transparent

Adularia and Andalusite Optic Character

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

Adularia and Andalusite Transparency

Similar to their colors, Adularia 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, Adularia is Gemstones (2009) and TransparentArthur Thomas while Adularia is Gemstones (2009) and TransparentArthur Thomas in appearance.