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Ammolite and Franklinite Optical Properties


Franklinite and Ammolite Optical Properties


Optical Properties

Luster
Silky, Vitreous   
Not Available   

Pleochroism
None   
Not Available   

Dispersion
Not Available   
Not Available   

Transparency
Not Available   
Translucent   

Refractive Index
1.520-1.670   
Not Available   

Optic Character
Not Available   
Not Available   

Crystal System
Trigonal   
Isometric Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: F d3m   

Birefringence
0.135-0.145   
Not Available   

Clarity
Not Available   
Translucent   

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Ammolite and Franklinite Optic Character

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

Similar to their colors, Ammolite and Franklinite 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, Ammolite is Not Available while Ammolite is Not Available in appearance.

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