Fluorite and Cuprite Optical Properties

Fluorite

Cuprite

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1 Optical Properties

1.1 Luster

Vitreous

Adamantine

1.2 Pleochroism

AbsentWalter Schumann

visible

1.3 Dispersion

0.01NA

0.007 1

1.4 Transparency

Transparent, Translucent, Transparent to translucent

TranslucentWalter Schumann

1.5 Refractive Index

1.432-1.4362.849

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

cubic

1.8 Birefringence

Not AvailableNot Available

0 0.296

1.9 Clarity

Transparent

TranslucentWalter Schumann

Fluorite and Cuprite Optic Character

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

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