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Schorl
Schorl

Melanite
Melanite



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Schorl
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Melanite

Schorl and Melanite Optical Properties

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Optical Properties

Luster

Vitreous
Subadamantine, Vitreous

Pleochroism

Very strong: yellow-brown pale yellow
-

Dispersion

0.020.06
0.005 1
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Transparency

Transparent, Translucent
Translucent

Refractive Index

1.635-1.6721.855-1.895
1 3.25
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Optic Character

-
-

Crystal System

-
-

Birefringence

0.025-9999
0 0.296
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Clarity

Transparent
Translucent

Schorl and Melanite Optic Character

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

Schorl and Melanite Transparency

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