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Sodalite
Sodalite

Iolite
Iolite



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Sodalite
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Iolite

Sodalite and Iolite Optical Properties

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1 Optical Properties
1.1 Luster
Greasy
Vitreous
1.2 Pleochroism
AbsentWalter Schumann
Not Available
1.3 Dispersion
Albite Optical ..
0.02
Rank: 21 (Overall)
Not Available
Rank: N/A (Overall)
Fluorite Optical Properties
1.4 Transparency
Transparent, Translucent, Opaque
Transparent, Translucent, Transparent to translucent
1.5 Refractive Index
1.478-1.488
1.52-1.56
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
cubic
Orthorhombic
1.8 Birefringence
Not Available
Not Available
1.9 Clarity
Transparent
Transparent to translucent

Sodalite and Iolite Optic Character

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

Sodalite and Iolite Transparency

Similar to their colors, Sodalite and Iolite 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, Sodalite is Opaque, Translucent and Transparent while Sodalite is Opaque, Translucent and Transparent in appearance.

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