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Feldspar and Pearl Optical Properties


Pearl and Feldspar Optical Properties


Optical Properties

Luster
Vitreous   
Pearly   

Pleochroism
None   
AbsentWalter Schumann   

Dispersion
Not Available   
None   

Transparency
Transparent, Translucent   
Translucent, Opaque   

Refractive Index
1.518-1.570   
1.52-1.66   

Optic Character
Not Available   
Not Available   

Crystal System
Triclinic or monoclinic   
Orthorhombic   

Birefringence
0.008-0.010   
0.156   

Clarity
Transparent   
Translucent   

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Feldspar and Pearl Optic Character

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

Similar to their colors, Feldspar and Pearl 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, Feldspar is Translucent and Transparent while Feldspar is Translucent and Transparent in appearance.

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