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Fibrolite and Astrophyllite Optical Properties


Astrophyllite and Fibrolite Optical Properties


Optical Properties

Luster
Not Available   
Greasy, Pearly   

Pleochroism
DistinctArthur Thomas   
Strong: X= deep red-orange Y= orange-yellow Z= lemon-yellow   

Dispersion
0.02   
24
Not Available   

Transparency
Transparent   
Translucent   

Refractive Index
1.658-1.678   
1.678-1.758   

Optic Character
Not Available   
Not Available   

Crystal System
Not Available   
Triclinic   

Birefringence
Not Available   
0.050   

Clarity
Transparent   
Translucent   

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Fibrolite and Astrophyllite Optic Character

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

Similar to their colors, Fibrolite and Astrophyllite 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, Fibrolite is Transparent while Fibrolite is Transparent in appearance.

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