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Garnet
Garnet

Cuprite
Cuprite



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Garnet
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Cuprite

Garnet and Cuprite Optical Properties

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Optical Properties

Luster

Vitreous, Adamantine
Adamantine

Pleochroism

None
visible

Dispersion

0.020.05
0.005 1
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Transparency

Transparent, Transparent to translucent
TranslucentWalter Schumann

Refractive Index

1.730-1.8952.849
1 3.25
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Optic Character

-
-

Crystal System

Trigonal
cubic

Birefringence

-9999-9999
0 0.296
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Clarity

Transparent
TranslucentWalter Schumann

Garnet and Cuprite Optic Character

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

Garnet and Cuprite Transparency

Similar to their colors, Garnet 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, Garnet is Transparent and Transparent to translucent while Garnet is Transparent and Transparent to translucent in appearance.