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Amblygonite
Amblygonite

Sodalite
Sodalite



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Amblygonite
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Sodalite

Amblygonite and Sodalite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Pearly
Greasy
1.2 Pleochroism
weak to none
AbsentWalter Schumann
1.3 Dispersion
0.010.02
Fluorite Optical Properties
0.007 1
1.4 Transparency
Gemmological Tables (2004) More from other references
Transparent, Translucent, Opaque
1.5 Refractive Index
1.578-1.6461.478-1.488
Agate Opal
1 3.25
1.6 Optic Character
Biaxial/+
Not Available
1.7 Crystal System
Triclinic
cubic
1.8 Birefringence
0.020-0.030Not Available
Achroite
0 0.296
1.9 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Transparent

Amblygonite and Sodalite Optic Character

Amblygonite and Sodalite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Amblygonite and Sodalite 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 Amblygonite and Sodalite 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. Amblygonite has Biaxial/+ character.

Amblygonite and Sodalite Transparency

Similar to their colors, Amblygonite and Sodalite 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, Amblygonite is Gemmological Tables (2004) More from other references while Amblygonite is Gemmological Tables (2004) More from other references in appearance.