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Anthophyllite and Agate Optical Properties


Agate and Anthophyllite Optical Properties


Optical Properties

Luster
Vitreous, Pearly   
Vitreous   

Pleochroism
When Fe-rich   
Absent   

Dispersion
Not Available   
None   

Transparency
Transparent   
Translucent   

Refractive Index
1.603-1.690   
1.530-1.543   

Optic Character
Biaxial/+   
Not Available   

Crystal System
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma   
Trigonal   

Birefringence
Not Available   
0.004   

Clarity
Transparent   
Translucent   

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Anthophyllite and Agate Optic Character

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

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Anthophyllite and Agate Transparency

Similar to their colors, Anthophyllite and Agate 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, Anthophyllite is Transparent while Anthophyllite is Transparent in appearance.

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