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Allanite and Carnelian Optical Properties


Carnelian and Allanite Optical Properties


Optical Properties

Luster
Not Available   
Vitreous   

Pleochroism
Not Available   
AbsentWalter Schumann   

Dispersion
Not Available   
None   

Transparency
Not Available   
Translucent, Transparent to nearly opaque   

Refractive Index
1   
1.535-1.539   

Optic Character
Not Available   
Not Available   

Crystal System
Not Available   
Trigonal   

Birefringence
0.013-0.036   
0.003-0.009   

Clarity
Not Available   
Translucent   

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Allanite and Carnelian Optic Character

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

Similar to their colors, Allanite and Carnelian 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, Allanite is Not Available while Allanite is Not Available in appearance.

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Brown Gemstones


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