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Variscite
Variscite

Cassiterite
Cassiterite



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Variscite
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Cassiterite

Variscite and Cassiterite Optical Properties

Optical Properties

Luster

Vitreous, Waxy
Adamantine, Greasy

Pleochroism

-
Pleochroic haloes have been observed. Dichroic in yellow

Dispersion

0.010.07
0.005 1
👆🏻

Transparency

Translucent, Opaque . May be translucent when backlit on the edges.
Transparent, Translucent

Refractive Index

1.560-1.5941.990-2.105
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
tetragonal

Birefringence

0.0310.096-0.098
0 0.296
👆🏻

Clarity

Translucent
Transparent

Variscite and Cassiterite Optic Character

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

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