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Oligoclase and Omphacite Optical Properties


Omphacite and Oligoclase Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous   

Pleochroism
Not Available   
Weak: colorless -- very pale green -- very pale green   

Dispersion
Not Available   
Not Available   

Transparency
Gemmological Tables (2004)   
TranslucentAnthony et al, Handbook of mineralogy (2001)   

Refractive Index
1.538-1.550   
1.662-1.723   

Optic Character
Not Available   
Not Available   

Crystal System
Not Available   
Not Available   

Birefringence
0.010   
Not Available   

Clarity
TransparentUlrich Henn and Claudio C. Milisenda   
TranslucentAnthony et al   

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Oligoclase and Omphacite Optic Character

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

Similar to their colors, Oligoclase and Omphacite 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, Oligoclase is Gemmological Tables (2004) while Oligoclase is Gemmological Tables (2004) in appearance.

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