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Cuprite
Cuprite

Andalusite
Andalusite



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Cuprite
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Andalusite

Cuprite and Andalusite Optical Properties

Optical Properties

Luster

Adamantine
Vitreous, Greasy

Pleochroism

visible
strongly trichroic

Dispersion

0.050.02
0.005 1
👆🏻

Transparency

TranslucentWalter Schumann
Transparent, Translucent

Refractive Index

2.8491.627-1.650
1 3.25
👆🏻

Optic Character

-
-

Crystal System

cubic
Orthorhombic

Birefringence

-99990.009-0.010
0 0.296
👆🏻

Clarity

TranslucentWalter Schumann
Transparent

Cuprite and Andalusite Optic Character

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

Cuprite and Andalusite Transparency

Similar to their colors, Cuprite and Andalusite 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, Cuprite is TranslucentWalter Schumann while Cuprite is TranslucentWalter Schumann in appearance.