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Anglesite and Dravite Optical Properties


Dravite and Anglesite Optical Properties


Optical Properties

Luster
Adamantine  
Vitreous  

Pleochroism
-  
Very strong: pale yellow colorless  

Dispersion
0.04  
32
0.02  
99+

Transparency
Transparent  
Transparent  

Refractive Index
1.877-1.894  
1.614-1.666  

Optic Character
-  
-  

Crystal System
Orthorhombic  
Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m  

Birefringence
0.017  
0.014-0.032  

Clarity
Transparent  
Transparent  

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Anglesite and Dravite Optic Character

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

Similar to their colors, Anglesite and Dravite 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, Anglesite is Transparent while Anglesite is Transparent in appearance.

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