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Realgar
Realgar

Adularia
Adularia



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Realgar
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Adularia

Realgar and Adularia Optical Properties

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Optical Properties

Luster

-
-

Pleochroism

Nearly colorless to pale golden yellowAnthony et al
-

Dispersion

0.060.01
0.005 1
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Transparency

-
TransparentArthur Thomas

Refractive Index

2.538-2.7041.518-1.536
1 3.25
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Optic Character

-
-

Crystal System

-
-

Birefringence

0.1660.005-0.008
0 0.296
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Clarity

-
TransparentArthur Thomas

Realgar and Adularia Optic Character

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

Similar to their colors, Realgar and Adularia 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.