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Anthophyllite and Turquoise Optical Properties


Turquoise and Anthophyllite Optical Properties


Optical Properties

Luster
Vitreous, Pearly   
Waxy   

Pleochroism
When Fe-rich   
Weak   

Dispersion
Not Available   
None   

Transparency
Transparent   
Translucent, Opaque   

Refractive Index
1.603-1.690   
1.610-1.650   

Optic Character
Biaxial/+   
Not Available   

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

Birefringence
Not Available   
0.040   

Clarity
Transparent   
Translucent   

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Anthophyllite and Turquoise Optic Character

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

Similar to their colors, Anthophyllite and Turquoise 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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