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Euclase
Euclase

Variscite
Variscite



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Euclase
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Variscite

Euclase and Variscite Optical Properties

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Optical Properties

Luster

Vitreous
Vitreous, Waxy

Pleochroism

Weak: colorless-(greenish) yellow
-

Dispersion

0.020.01
0.005 1
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Transparency

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

Refractive Index

1.650-1.6771.560-1.594
1 3.25
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Optic Character

-
-

Crystal System

Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/a
Orthorhombic

Birefringence

0.019-0.0250.031
0 0.296
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Clarity

TransparentUlrich Henn and Claudio C. Milisenda
Translucent

Euclase and Variscite Optic Character

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

Euclase and Variscite Transparency

Similar to their colors, Euclase 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, Euclase is while Euclase is in appearance.