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Violane
Violane

Sapphire
Sapphire



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Violane
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Sapphire

Violane and Sapphire Optical Properties

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Optical Properties

Luster

-
Vitreous, Adamantine

Pleochroism

-
Strong

Dispersion

0.030.02
0.005 1
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Transparency

Translucent
Transparent, Translucent, Transparent to opaque

Refractive Index

1.668-1.7031.762-1.788
1 3.25
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Optic Character

-
-

Crystal System

-
Trigonal

Birefringence

0.024-0.0300.008-0.009
0 0.296
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Clarity

Translucent
Transparent

Violane and Sapphire Optic Character

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

Violane and Sapphire Transparency

Similar to their colors, Violane and Sapphire 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, Violane is Translucent while Violane is Translucent in appearance.