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Dallasite
Dallasite

Variscite
Variscite



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Dallasite
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Variscite

Dallasite and Variscite Optical Properties

Optical Properties

Luster

-
Vitreous, Waxy

Pleochroism

-
-

Dispersion

0.010.01
0.005 1
👆🏻

Transparency

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

Refractive Index

1.5401.560-1.594
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
Orthorhombic

Birefringence

0.008-0.0100.031
0 0.296
👆🏻

Clarity

-
Translucent

Dallasite and Variscite Optic Character

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

Dallasite and Variscite Transparency

Similar to their colors, Dallasite and Variscite 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, Dallasite is while Dallasite is in appearance.