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Riebeckite and Antigorite Optical Properties


Antigorite and Riebeckite Optical Properties


Optical Properties

Luster
Vitreous, Silky   
Waxy, Silky, Resinous, Greasy   

Pleochroism
X = blue   
pale greenish yellow.   

Dispersion
Not Available   
Not Available   

Transparency
Not Available   
Translucent   

Refractive Index
1.680-1.698   
1.530-1.575   

Optic Character
Not Available   
Not Available   

Crystal System
monoclinic   
Monoclinic Domatic H-M Symbol (m) Space Group: Cm   

Birefringence
0.005-0.008   
Not Available   

Clarity
Not Available   
Translucent   

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Riebeckite and Antigorite Optic Character

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

Similar to their colors, Riebeckite and Antigorite 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, Riebeckite is Not Available while Riebeckite is Not Available in appearance.

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