Sodalite and Almandine Optical Properties

Sodalite

Almandine

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1 Optical Properties

1.1 Luster

Greasy

Greasy, Vitreous

1.2 Pleochroism

AbsentWalter Schumann

None

1.3 Dispersion

0.020.03

0.007 1

1.4 Transparency

Transparent, Translucent, Opaque

Gemmological Tables (2004) More from other references

1.5 Refractive Index

1.478-1.4881.770-1.820

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

cubic

1.8 Birefringence

Not AvailableNot Available

0 0.296

1.9 Clarity

Transparent

TransparentUlrich Henn and Claudio C. Milisenda

Sodalite and Almandine Optic Character

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

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Sodalite and Almandine Transparency

Similar to their colors, Sodalite and Almandine 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.