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Sapphire
Sapphire

Realgar
Realgar



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Sapphire
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Realgar

Sapphire and Realgar Optical Properties

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1 Optical Properties
1.1 Luster
Vitreous, Adamantine, Vitreous, Adamantine
Not Available
1.2 Pleochroism
Strong
Nearly colorless to pale golden yellowAnthony et al
1.3 Dispersion
0.02NA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Translucent, Transparent to opaque
Gems
1.5 Refractive Index
1.762-1.7882.538-2.704
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Trigonal
Not Available
1.8 Birefringence
0.008-0.0090.166
Achroite
0 0.296
1.9 Clarity
Transparent
Gems

Sapphire and Realgar Optic Character

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

Sapphire and Realgar Transparency

Similar to their colors, Sapphire and Realgar 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, Sapphire is Translucent, Transparent and Transparent to opaque while Sapphire is Translucent, Transparent and Transparent to opaque in appearance.