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Obsidian and Jeremejevite Optical Properties


Jeremejevite and Obsidian Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous   

Pleochroism
AbsentWalter Schumann   
Colorless   

Dispersion
0.01   
29
Not Available   

Transparency
Transparent, Translucent   
Gemmological Tables (2004) More from other references   

Refractive Index
1.450-1.550   
1.638-1.650   

Optic Character
Not Available   
Not Available   

Crystal System
Amorphous   
Hexagonal   

Birefringence
Not Available   
0.0130   

Clarity
Transparent   
TransparentUlrich Henn and Claudio C. Milisenda   

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Obsidian and Jeremejevite Optic Character

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

Similar to their colors, Obsidian and Jeremejevite 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, Obsidian is Translucent and Transparent while Obsidian is Translucent and Transparent in appearance.

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