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Dravite and Fire Agate Optical Properties


Fire Agate and Dravite Optical Properties


Optical Properties

Luster
Vitreous  
Waxy, Vitreous, Greasy, Silky  

Pleochroism
Very strong: pale yellow colorless  
-  

Dispersion
0.02  
99+
0.01  
99+

Transparency
Transparent  
Translucent  

Refractive Index
1.614-1.666  
1.530-1.543  

Optic Character
-  
-  

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

Birefringence
0.014-0.032  
0.003-0.009  

Clarity
Transparent  
Translucent  

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<< Physical Properties

Dravite and Fire Agate Optic Character

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

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

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