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Aragonite
Aragonite

Alunite
Alunite



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Aragonite
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Alunite

Aragonite and Alunite Optical Properties

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1 Optical Properties
1.1 Luster
Vitreous, Resinous
Vitreous, Pearly
1.2 Pleochroism
StrongArthur Thomas
Not Available
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Translucent
Not Available
1.5 Refractive Index
1.525-1.6861.572
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic
Trigonal
1.8 Birefringence
0.1550.020
Achroite
0 0.296
1.9 Clarity
Transparent
Not Available

Aragonite and Alunite Optic Character

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

Aragonite and Alunite Transparency

Similar to their colors, Aragonite and Alunite 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, Aragonite is Translucent and Transparent while Aragonite is Translucent and Transparent in appearance.