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Baddeleyite and Powellite Optical Properties


Powellite and Baddeleyite Optical Properties


Optical Properties

Luster
Adamantine   
Greasy, Subadamantine   

Pleochroism
DistinctArthur Thomas   
In deeply colored specimens: blue greenAnthony et al   

Dispersion
Not Available   
Not Available   

Transparency
Transparent   
Transparent   

Refractive Index
2.13-2.20   
1.974-1.984   

Optic Character
Not Available   
Not Available   

Crystal System
Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/c   
Not Available   

Birefringence
0.07   
Not Available   

Clarity
Transparent   
Transparent   

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Baddeleyite and Powellite Optic Character

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

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

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Brown Gemstones


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