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Alunite and Hiddenite Optical Properties


Hiddenite and Alunite Optical Properties


Optical Properties

Luster
Vitreous, Pearly   
Vitreous   

Pleochroism
Not Available   
Distinct trichroism: yellow green green blue greenHerve Nicolas Lazzarelli   

Dispersion
Not Available   
0.02   
22

Transparency
Not Available   
Transparent   

Refractive Index
1.572   
1.657-1.681   

Optic Character
Not Available   
Not Available   

Crystal System
Trigonal   
monoclinic   

Birefringence
0.020   
0.014-0.016   

Clarity
Not Available   
TransparentUlrich Henn and Claudio C. Milisenda   

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Alunite and Hiddenite Optic Character

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

Similar to their colors, Alunite and Hiddenite 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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