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Cordierite
Cordierite

Anorthite
Anorthite



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X
Cordierite
X
Anorthite

Cordierite and Anorthite Optical Properties

1 Optical Properties
1.1 Luster
Greasy, Vitreous
Vitreous
1.2 Pleochroism
X = pale yellow
colorless.
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Not Available
Transparent
1.5 Refractive Index
Not Available1.575-1.588
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic
Triclinic
1.8 Birefringence
Not Available0.012-0.013
Achroite
0 0.296
1.9 Clarity
Not Available
Transparent

Cordierite and Anorthite Optic Character

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

Cordierite and Anorthite Transparency

Similar to their colors, Cordierite and Anorthite 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, Cordierite is Not Available while Cordierite is Not Available in appearance.