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Black Opal and Spodumene Optical Properties


Spodumene and Black Opal Optical Properties


Optical Properties

Luster
Not Available   
Vitreous   

Pleochroism
AbsentWalter Schumann   
Strong in kunzite: α-purple   

Dispersion
None   
0.02   
22

Transparency
Transparent, Translucent   
Transparent   

Refractive Index
1.370-1.470   
1.657-1.681   

Optic Character
Not Available   
Not Available   

Crystal System
Not Available   
monoclinic   

Birefringence
Not Available   
0.014-0.018   

Clarity
Transparent   
Gems   

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<< Physical Properties

Black Opal and Spodumene Optic Character

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

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

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