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Cordierite and Pearl Optical Properties


Pearl and Cordierite Optical Properties


Optical Properties

Luster
Greasy, Vitreous   
Pearly   

Pleochroism
X = pale yellow   
AbsentWalter Schumann   

Dispersion
Not Available   
None   

Transparency
Not Available   
Translucent, Opaque   

Refractive Index
Not Available   
1.52-1.66   

Optic Character
Not Available   
Not Available   

Crystal System
Orthorhombic   
Orthorhombic   

Birefringence
Not Available   
0.156   

Clarity
Not Available   
Translucent   

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Cordierite and Pearl Optic Character

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

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

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