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Anthophyllite
Anthophyllite

Adularia
Adularia



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Anthophyllite
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Adularia

Anthophyllite and Adularia Optical Properties

Optical Properties

Luster

Vitreous, Pearly
-

Pleochroism

-
-

Dispersion

0.010.01
0.005 1
👆🏻

Transparency

Transparent
TransparentArthur Thomas

Refractive Index

1.603-1.6901.518-1.536
1 3.25
👆🏻

Optic Character

Biaxial/+
-

Crystal System

Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
-

Birefringence

-99990.005-0.008
0 0.296
👆🏻

Clarity

Transparent
TransparentArthur Thomas

Anthophyllite and Adularia Optic Character

Anthophyllite and Adularia optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Anthophyllite and Adularia 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 Anthophyllite and Adularia 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. Anthophyllite has Biaxial/+ character.

Anthophyllite and Adularia Transparency

Similar to their colors, Anthophyllite and Adularia 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, Anthophyllite is Transparent while Anthophyllite is Transparent in appearance.