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Variscite
Variscite

Dravite
Dravite



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Variscite and Dravite Optical Properties

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1 Optical Properties
1.1 Luster
Vitreous, Waxy
Vitreous
1.2 Pleochroism
MissingWalter Schumann
Very strong: pale yellow colorless
1.3 Dispersion
Albite Optical ..
Not Available
Rank: N/A (Overall)
0.02
Rank: 22 (Overall)
Fluorite Optical Properties
1.4 Transparency
Translucent, Opaque . May be translucent when backlit on the edges.
Transparent
1.5 Refractive Index
1.560-1.594
1.614-1.666
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic
Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m
1.8 Birefringence
0.031
0.014-0.032
1.9 Clarity
Translucent
Transparent

Variscite and Dravite Optic Character

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

Variscite and Dravite Transparency

Similar to their colors, Variscite and Dravite 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, Variscite is Opaque . May be translucent when backlit on the edges. and Translucent while Variscite is Opaque . May be translucent when backlit on the edges. and Translucent in appearance.