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Vishnevite
Vishnevite

Sinhalite
Sinhalite



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Vishnevite
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Sinhalite

Vishnevite and Sinhalite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Pearly
Not Available
1.2 Pleochroism
Not Available
Trichroism: green light brown dark brownHerve Nicolas Lazzarelli
1.3 Dispersion
NA0.02
Fluorite Optical Properties
0.007 1
1.4 Transparency
Not Available
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.490-1.5071.665-1.712
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Hexagonal
Orthorhombic
1.8 Birefringence
0.002-0.0120.036-0.042
Achroite
0 0.296
1.9 Clarity
Not Available
TransparentUlrich Henn and Claudio C. Milisenda

Vishnevite and Sinhalite Optic Character

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

Vishnevite and Sinhalite Transparency

Similar to their colors, Vishnevite and Sinhalite 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, Vishnevite is Not Available while Vishnevite is Not Available in appearance.