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Apatite
Apatite

Sodalite
Sodalite



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Apatite
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Sodalite

Apatite and Sodalite Optical Properties

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1 Optical Properties
1.1 Luster
Vitreous
Greasy
1.2 Pleochroism
Blue stones – strong
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
1.628-1.6511.478-1.488
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Hexagonal
cubic
1.8 Birefringence
0.002-0.008Not Available
Achroite
0 0.296
1.9 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Transparent

Apatite and Sodalite Optic Character

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

Apatite and Sodalite Transparency

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