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Moldavite
Moldavite

Alunite
Alunite



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Moldavite
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Alunite

Moldavite and Alunite Optical Properties

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1 Optical Properties
1.1 Luster
Vitreous
Vitreous, Pearly
1.2 Pleochroism
Absent
Not Available
1.3 Dispersion
NoneNA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Translucent
Not Available
1.5 Refractive Index
1.48-1.541.572
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Amorphous
Trigonal
1.8 Birefringence
Not Available0.020
Achroite
0 0.296
1.9 Clarity
Transparent
Not Available

Moldavite and Alunite Optic Character

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

Moldavite and Alunite Transparency

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