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Turquoise and Obsidian Optical Properties


Obsidian and Turquoise Optical Properties


Optical Properties

Luster
Waxy   
Vitreous   

Pleochroism
Weak   
AbsentWalter Schumann   

Dispersion
None   
0.01   
29

Transparency
Translucent, Opaque   
Transparent, Translucent   

Refractive Index
1.610-1.650   
1.450-1.550   

Optic Character
Not Available   
Not Available   

Crystal System
Triclinic   
Amorphous   

Birefringence
0.040   
Not Available   

Clarity
Translucent   
Transparent   

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Turquoise and Obsidian Optic Character

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

Similar to their colors, Turquoise and Obsidian 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, Turquoise is Opaque and Translucent while Turquoise is Opaque and Translucent in appearance.

Semi Precious

Semi Precious


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