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Sphene and Pearl Optical Properties


Pearl and Sphene Optical Properties


Optical Properties

Luster
Not Available   
Pearly   

Pleochroism
Not Available   
AbsentWalter Schumann   

Dispersion
Not Available   
None   

Transparency
Not Available   
Translucent, Opaque   

Refractive Index
1.84-2.11   
1.52-1.66   

Optic Character
Not Available   
Not Available   

Crystal System
monoclinic   
Orthorhombic   

Birefringence
Not Available   
0.156   

Clarity
Color grading system   
Translucent   

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<< Physical Properties

Sphene and Pearl Optic Character

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

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

Yellow Gemstones

Yellow Gemstones


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