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Melanite
Melanite

Vishnevite
Vishnevite



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Melanite
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Vishnevite

Melanite and Vishnevite Optical Properties

1 Optical Properties
1.1 Luster
Subadamantine, Vitreous
Vitreous, Pearly
1.2 Pleochroism
Not Available
Not Available
1.3 Dispersion
0.06NA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent
Not Available
1.5 Refractive Index
1.855-1.8951.490-1.507
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
Hexagonal
1.8 Birefringence
Not Available0.002-0.012
Achroite
0 0.296
1.9 Clarity
Translucent
Not Available

Melanite and Vishnevite Optic Character

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

Melanite and Vishnevite Transparency

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