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Phosgenite
Phosgenite

Sodalite
Sodalite



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Sodalite

Phosgenite and Sodalite Optical Properties

1 Optical Properties
1.1 Luster
Adamantine
Greasy
1.2 Pleochroism
Weakly pleochroic with O reddish and E greenish in thick sections.
AbsentWalter Schumann
1.3 Dispersion
Albite Optical ..
Not Available
Rank: N/A (Overall)
0.02
Rank: 21 (Overall)
Fluorite Optical Properties
1.4 Transparency
Gemmological Tables (2004) More from other references
Transparent, Translucent, Opaque
1.5 Refractive Index
2.117-2.145
1.478-1.488
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
tetragonal
cubic
1.8 Birefringence
0.027
Not Available
1.9 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Transparent

Phosgenite and Sodalite Optic Character

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

Phosgenite and Sodalite Transparency

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