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Sphene and Andesine Optical Properties


Andesine and Sphene Optical Properties


Optical Properties

Luster
Not Available   
Vitreous   

Pleochroism
Not Available   
colorless.   

Dispersion
Not Available   
0.70   
2

Transparency
Not Available   
Transparent, Translucent, Transparent to translucent   

Refractive Index
1.84-2.11   
1.543-1.564   

Optic Character
Not Available   
Biaxial/+   

Crystal System
monoclinic   
Triclinic   

Birefringence
Not Available   
0.007-0.011   

Clarity
Color grading system   
Transparent   

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Sphene and Andesine Optic Character

Sphene and Andesine optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Sphene and Andesine 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 Sphene and Andesine 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. Andesine has Biaxial/+ character.

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Sphene and Andesine Transparency

Similar to their colors, Sphene and Andesine 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, Sphene is Not Available while Sphene is Not Available in appearance.

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