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Grossular and Precious Opal Optical Properties


Precious Opal and Grossular Optical Properties


Optical Properties

Luster
Greasy, Vitreous   
Not Available   

Pleochroism
None   
AbsentWalter Schumann   

Dispersion
0.02   
18
None   

Transparency
Gemmological Tables (2004) More from other references   
Transparent, Translucent   

Refractive Index
1.730-1.760   
1.370-1.470   

Optic Character
Not Available   
Not Available   

Crystal System
cubic   
Not Available   

Birefringence
0.020   
Not Available   

Clarity
TransparentUlrich Henn and Claudio C. Milisenda   
Transparent   

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Grossular and Precious Opal Optic Character

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

Similar to their colors, Grossular and Precious 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, Grossular is Gemmological Tables (2004) More from other references while Grossular is Gemmological Tables (2004) More from other references in appearance.

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