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Variscite
Variscite

Topaz
Topaz



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Variscite
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Topaz

Variscite and Topaz Optical Properties

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Optical Properties

Luster

Vitreous, Waxy
Vitreous

Pleochroism

-
Weak

Dispersion

0.010.01
0.005 1
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Transparency

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

Refractive Index

1.560-1.5941.606-1.644
1 3.25
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Optic Character

-
-

Crystal System

Orthorhombic
Orthorhombic

Birefringence

0.0310.008-0.011
0 0.296
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Clarity

Translucent
TransparentUlrich Henn and Claudio C. Milisenda

Variscite and Topaz Optic Character

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

Similar to their colors, Variscite and Topaz 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.