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Natrolite and Inderite Optical Properties


Inderite and Natrolite Optical Properties


Optical Properties

Luster
Vitreous, Silky, Pearly   
Vitreous, Pearly, Greasy   

Pleochroism
NilArthur Thomas   
Not Available   

Dispersion
Not Available   
Not Available   

Transparency
Transparent, Translucent   
Gemmological Tables (2004)   

Refractive Index
1.478-1.493   
1.488-1.505   

Optic Character
Not Available   
Biaxial/+   

Crystal System
Orthorhombic   
Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/a   

Birefringence
0.012-0.013   
0.017   

Clarity
Transparent   
TransparentUlrich Henn and Claudio C. Milisenda   

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Natrolite and Inderite Optic Character

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

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Natrolite and Inderite Transparency

Similar to their colors, Natrolite and Inderite 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, Natrolite is Translucent and Transparent while Natrolite is Translucent and Transparent in appearance.

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