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Ekanite and Bertrandite Optical Properties


Bertrandite and Ekanite Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous   

Pleochroism
Not Available   
none.   

Dispersion
Not Available   
Not Available   

Transparency
Transparent   
TransparentAnthony et al, Handbook of mineralogy (2001)   

Refractive Index
1.593-1.596   
1.583-1.614   

Optic Character
Not Available   
Not Available   

Crystal System
Tetragonal Trapezohedral H-M Symbol (4 2 2) Space Group: I 422   
Orthorhombic Pyramidal H-M Symbol (mm2) Space Group: Ccm21   

Birefringence
0.001   
Not Available   

Clarity
Transparent   
TransparentAnthony et al   

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Ekanite and Bertrandite Optic Character

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

Similar to their colors, Ekanite and Bertrandite 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, Ekanite is Transparent while Ekanite is Transparent in appearance.

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