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Inderite and Montebrasite Optical Properties


Montebrasite and Inderite Optical Properties


Optical Properties

Luster
Vitreous, Pearly, Greasy   
Not Available   

Pleochroism
Not Available   
Not Available   

Dispersion
Not Available   
Not Available   

Transparency
Gemmological Tables (2004)   
TransparentWalter Schumann, Gemstones of the world (2001) More from other references   

Refractive Index
1.488-1.505   
1.578-1.646   

Optic Character
Biaxial/+   
Not Available   

Crystal System
Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/a   
Not Available   

Birefringence
0.017   
0.020-0.030   

Clarity
TransparentUlrich Henn and Claudio C. Milisenda   
TransparentWalter Schumann   

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Inderite and Montebrasite Optic Character

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

Similar to their colors, Inderite and Montebrasite 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, Inderite is Gemmological Tables (2004) while Inderite is Gemmological Tables (2004) in appearance.

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