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Astrophyllite and Ceylonite Optical Properties


Ceylonite and Astrophyllite Optical Properties


Optical Properties

Luster
Greasy, Pearly  
Vitreous  

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

Dispersion
0.12  
15
0.02  
99+

Transparency
Translucent  
Transparent, Translucent  

Refractive Index
1.678-1.758  
1.770-1.780  

Optic Character
-  
-  

Crystal System
Triclinic  
Isometric  

Birefringence
0.050  
-9999  

Clarity
Translucent  
Transparent  

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Astrophyllite and Ceylonite Optic Character

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

Similar to their colors, Astrophyllite and Ceylonite 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, Astrophyllite is Translucent while Astrophyllite is Translucent in appearance.

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