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Vishnevite
Vishnevite

Proustite
Proustite



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Vishnevite
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Proustite

Vishnevite and Proustite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Pearly
Adamantine
1.2 Pleochroism
Not Available
Moderate; cochineal-red to blood-red
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Not Available
OpaqueUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) Rarely transparentMore from other references
1.5 Refractive Index
1.490-1.5072.792-3.087
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Hexagonal
Trigonal
1.8 Birefringence
0.002-0.0120.295-0.296
Achroite
0 0.296
1.9 Clarity
Not Available
OpaqueUlrich Henn and Claudio C. Milisenda

Vishnevite and Proustite Optic Character

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

Similar to their colors, Vishnevite and Proustite 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.