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Quartz and Black Opal Optical Properties


Black Opal and Quartz Optical Properties


Optical Properties

Luster
Vitreous   
Not Available   

Pleochroism
None   
AbsentWalter Schumann   

Dispersion
0.01   
27
None   

Transparency
Transparent, Translucent, Transparent to translucent   
Transparent, Translucent   

Refractive Index
1.544-1.553   
1.370-1.470   

Optic Character
Not Available   
Not Available   

Crystal System
Trigonal   
Not Available   

Birefringence
0.009   
Not Available   

Clarity
Opaque   
Transparent   

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<< Physical Properties

Quartz and Black Opal Optic Character

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

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Quartz and Black Opal Transparency

Similar to their colors, Quartz and Black Opal 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, Quartz is Translucent, Transparent and Transparent to translucent while Quartz is Translucent, Transparent and Transparent to translucent in appearance.

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