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Powellite and Aegirine Optical Properties


Aegirine and Powellite Optical Properties


Optical Properties

Luster
Greasy, Subadamantine   
Vitreous, Resinous   

Pleochroism
In deeply colored specimens: blue greenAnthony et al   
X = emerald green   

Dispersion
Not Available   
Not Available   

Transparency
Transparent   
Gemmological Tables (2004) More from other references   

Refractive Index
1.974-1.984   
1.720-1.778   

Optic Character
Not Available   
Not Available   

Crystal System
Not Available   
monoclinic   

Birefringence
Not Available   
0.037-0.061   

Clarity
Transparent   
Gemmological Tables (2004) More from other references   

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Powellite and Aegirine Optic Character

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

Similar to their colors, Powellite and Aegirine 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, Powellite is Transparent while Powellite is Transparent in appearance.

Blue Gemstones

Blue Gemstones


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