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Friedelite and Montebrasite Optical Properties


Montebrasite and Friedelite Optical Properties


Optical Properties

Luster
Not Available   
Not Available   

Pleochroism
NilArthur Thomas   
Not Available   

Dispersion
Not Available   
Not Available   

Transparency
Translucent   
TransparentWalter Schumann, Gemstones of the world (2001) More from other references   

Refractive Index
1.627-1.663   
1.578-1.646   

Optic Character
Not Available   
Not Available   

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

Birefringence
0.032-0.035   
0.020-0.030   

Clarity
Translucent   
TransparentWalter Schumann   

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<< Physical Properties

Friedelite and Montebrasite Optic Character

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

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Friedelite and Montebrasite Transparency

Similar to their colors, Friedelite 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, Friedelite is Translucent while Friedelite is Translucent in appearance.

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