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Alunite and Celestine Optical Properties


Celestine and Alunite Optical Properties


Optical Properties

Luster
Vitreous, Pearly   
Vitreous, Pearly   

Pleochroism
Not Available   
Weakly trichroiC   

Dispersion
Not Available   
Not Available   

Transparency
Not Available   
Gems   

Refractive Index
1.572   
1.619-1.635   

Optic Character
Not Available   
Not Available   

Crystal System
Trigonal   
Orthorhombic   

Birefringence
0.020   
0.004-0.012   

Clarity
Not Available   
Gems   

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<< Physical Properties

Alunite and Celestine Optic Character

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

Similar to their colors, Alunite and Celestine 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, Alunite is Not Available while Alunite is Not Available in appearance.

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