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Agate Opal and Vivianite Optical Properties


Vivianite and Agate Opal Optical Properties


Optical Properties

Luster
Not Available   
Vitreous, Pearly   

Pleochroism
AbsentWalter Schumann   
Anomalous plechroism is strong with colours deep blue/pale yellowish green/yellowish green.Michael O’Donoghue   

Dispersion
None   
Not Available   

Transparency
Translucent   
Transparent   

Refractive Index
1.37-1.52   
1.560-1.640   

Optic Character
Not Available   
Not Available   

Crystal System
Not Available   
Not Available   

Birefringence
Not Available   
0.054-0.075   

Clarity
Translucent   
Transparent   

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Agate Opal and Vivianite Optic Character

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

Similar to their colors, Agate Opal and Vivianite 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, Agate Opal is Translucent while Agate Opal is Translucent in appearance.

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