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Common Opal and Rock Crystal Optical Properties


Rock Crystal and Common Opal Optical Properties


Optical Properties

Luster
Not Available   
Not Available   

Pleochroism
AbsentWalter Schumann   
AbsentWalter Schumann   

Dispersion
None   
0.01   
27

Transparency
Translucent   
TransparentWalter Schumann, Gemstones of the world (2001) More from other references   

Refractive Index
1.37-1.52   
1.544-1.553   

Optic Character
Not Available   
Not Available   

Crystal System
Not Available   
Not Available   

Birefringence
Not Available   
0.009   

Clarity
Translucent   
TransparentWalter Schumann   

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<< Physical Properties

Common Opal and Rock Crystal Optic Character

Common Opal and Rock Crystal optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Common Opal and Rock Crystal 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 Common Opal and Rock Crystal 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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Common Opal and Rock Crystal Transparency

Similar to their colors, Common Opal and Rock Crystal 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, Common Opal is Translucent while Common Opal is Translucent in appearance.

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