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Astrophyllite
Astrophyllite

Anorthite
Anorthite



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Astrophyllite
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Anorthite

Astrophyllite and Anorthite Optical Properties

Optical Properties

Luster

Greasy, Pearly
Vitreous

Pleochroism

Strong: X= deep red-orange Y= orange-yellow Z= lemon-yellow
colorless.

Dispersion

0.120.01
0.005 1
👆🏻

Transparency

Translucent
Transparent

Refractive Index

1.678-1.7581.575-1.588
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Triclinic
Triclinic

Birefringence

0.0500.012-0.013
0 0.296
👆🏻

Clarity

Translucent
Transparent

Astrophyllite and Anorthite Optic Character

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

Astrophyllite and Anorthite Transparency

Similar to their colors, Astrophyllite 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, Astrophyllite is Translucent while Astrophyllite is Translucent in appearance.