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Rutile
Rutile

Cuprite
Cuprite



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Rutile
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Cuprite

Rutile and Cuprite Optical Properties

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Optical Properties

Luster

Adamantine
Adamantine

Pleochroism

Weak to distinct brownish red-green-yellow
visible

Dispersion

0.330.05
0.005 1
👆🏻

Transparency

Transparent, Translucent
TranslucentWalter Schumann

Refractive Index

2.609-2.9032.849
1 3.25
👆🏻

Optic Character

-
-

Crystal System

tetragonal
cubic

Birefringence

0.296-9999
0 0.296
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Clarity

Transparent
TranslucentWalter Schumann

Rutile and Cuprite Optic Character

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

Rutile and Cuprite Transparency

Similar to their colors, Rutile 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, Rutile is Transparent and Translucent while Rutile is Transparent and Translucent in appearance.