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Realgar
Realgar

Hiddenite
Hiddenite



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Realgar
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Hiddenite

Realgar and Hiddenite Optical Properties

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Optical Properties

Luster

-
Vitreous

Pleochroism

Nearly colorless to pale golden yellowAnthony et al
Distinct trichroism: yellow green green blue greenHerve Nicolas Lazzarelli

Dispersion

0.060.02
0.005 1
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Transparency

-
Transparent

Refractive Index

2.538-2.7041.657-1.681
1 3.25
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Optic Character

-
-

Crystal System

-
monoclinic

Birefringence

0.1660.014-0.016
0 0.296
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Clarity

-
TransparentUlrich Henn and Claudio C. Milisenda

Realgar and Hiddenite Optic Character

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

Similar to their colors, Realgar and Hiddenite 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.