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Goshenite and Bertrandite Optical Properties


Bertrandite and Goshenite Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous   

Pleochroism
Not Available   
none.   

Dispersion
0.01   
26
Not Available   

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

Refractive Index
1.562-1.615   
1.583-1.614   

Optic Character
Not Available   
Not Available   

Crystal System
Hexagonal   
Orthorhombic Pyramidal H-M Symbol (mm2) Space Group: Ccm21   

Birefringence
0.003-0.010   
Not Available   

Clarity
Transparent   
TransparentAnthony et al   

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Goshenite and Bertrandite Optic Character

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

Similar to their colors, Goshenite 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, Goshenite is Transparent while Goshenite is Transparent in appearance.

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