Fluorite and Anthophyllite Optical Properties

Fluorite

Anthophyllite

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Optical Properties

Luster

Vitreous

Vitreous, Pearly

Pleochroism

Dispersion

0.010.01

0.005 1

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Transparency

Transparent, Translucent, Transparent to translucent

Transparent

Refractive Index

1.432-1.4361.603-1.690

1 3.25

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Optic Character

Biaxial/+

Crystal System

cubic

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

Birefringence

-9999-9999

0 0.296

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Clarity

Transparent

Fluorite and Anthophyllite Optic Character

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

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Fluorite and Anthophyllite Transparency

Similar to their colors, Fluorite and Anthophyllite 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, Fluorite is Transparent, Translucent and Transparent to translucent while Fluorite is Transparent, Translucent and Transparent to translucent in appearance.