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Lepidolite and Hexagonite Optical Properties


Hexagonite and Lepidolite Optical Properties


Optical Properties

Luster
Vitreous, Pearly   
Vitreous   

Pleochroism
X = almost colorless; Y = Z = pink   
bluish–red   

Dispersion
Not Available   
Not Available   

Transparency
Transparent   
Transparent   

Refractive Index
1.525-1.587   
1.599-1.637   

Optic Character
Not Available   
Not Available   

Crystal System
Triclinic   
Not Available   

Birefringence
0.0290-0.0380   
0.019-0.028   

Clarity
Transparent   
Transparent   

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Lepidolite and Hexagonite Optic Character

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

Similar to their colors, Lepidolite and Hexagonite 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, Lepidolite is Transparent while Lepidolite is Transparent in appearance.

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