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Anorthite
Anorthite

Datolite
Datolite



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Anorthite
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Datolite

Anorthite and Datolite Optical Properties

Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

colorless.
-

Dispersion

0.010.02
0.005 1
👆🏻

Transparency

Transparent
Transparent

Refractive Index

1.575-1.5881.621-1.675
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Triclinic
monoclinic

Birefringence

0.012-0.0130.044
0 0.296
👆🏻

Clarity

Transparent
Transparent

Anorthite and Datolite Optic Character

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

Anorthite and Datolite Transparency

Similar to their colors, Anorthite and Datolite 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, Anorthite is Transparent while Anorthite is Transparent in appearance.