Fluorite and Topaz Optical Properties

Fluorite

Topaz

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Optical Properties

Luster

Vitreous

Pleochroism

Weak

Dispersion

0.010.01

0.005 1

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Transparency

Transparent, Translucent, Transparent to translucent

Transparent

Refractive Index

1.432-1.4361.606-1.644

1 3.25

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Optic Character

Crystal System

cubic

Orthorhombic

Birefringence

-99990.008-0.011

0 0.296

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Clarity

Transparent

TransparentUlrich Henn and Claudio C. Milisenda

Fluorite and Topaz Optic Character

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

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Fluorite and Topaz Transparency

Similar to their colors, Fluorite and Topaz 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.