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Powellite and Rutile Optical Properties


Rutile and Powellite Optical Properties


Optical Properties

Luster
Greasy, Subadamantine   
Adamantine   

Pleochroism
In deeply colored specimens: blue greenAnthony et al   
Weak to distinct brownish red-green-yellow   

Dispersion
Not Available   
Not Available   

Transparency
Transparent   
Transparent, Translucent   

Refractive Index
1.974-1.984   
2.609-2.903   

Optic Character
Not Available   
Not Available   

Crystal System
Not Available   
tetragonal   

Birefringence
Not Available   
0.296   

Clarity
Transparent   
Transparent   

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Powellite and Rutile Optic Character

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

Similar to their colors, Powellite and Rutile 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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