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Realgar
Realgar

Cavansite
Cavansite



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Realgar
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Cavansite

Realgar and Cavansite Optical Properties

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Optical Properties

Luster

-
Vitreous, Pearly

Pleochroism

Nearly colorless to pale golden yellowAnthony et al
Visible: X=Z= colorless Y= blue

Dispersion

0.060.04
0.005 1
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Transparency

-
-

Refractive Index

2.538-2.7041.542
1 3.25
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Optic Character

-
-

Crystal System

-
Orthorhombic

Birefringence

0.1660.009
0 0.296
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Clarity

-
-

Realgar and Cavansite Optic Character

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

Realgar and Cavansite Transparency

Similar to their colors, Realgar and Cavansite 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, Realgar is while Realgar is in appearance.