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Alunite and Liddicoatite Optical Properties


Liddicoatite and Alunite Optical Properties


Optical Properties

Luster
Vitreous, Pearly   
Vitreous   

Pleochroism
Not Available   
Strong: dark brown light brownAnthony et al   

Dispersion
Not Available   
Not Available   

Transparency
Not Available   
Transparent   

Refractive Index
1.572   
Not Available   

Optic Character
Not Available   
Not Available   

Crystal System
Trigonal   
Not Available   

Birefringence
0.020   
Not Available   

Clarity
Not Available   
Transparent   

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<< Physical Properties

Alunite and Liddicoatite Optic Character

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

Similar to their colors, Alunite and Liddicoatite 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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Red Gemstones


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