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Gedrite and Amethyst Optical Properties


Amethyst and Gedrite Optical Properties


Optical Properties

Luster
Vitreous  
Vitreous  

Pleochroism
Weak to moderate  
None  

Dispersion
0.02  
99+
0.01  
99+

Transparency
Transparent  
Transparent, Transparent to translucent  

Refractive Index
1.625-1.718  
1.544-1.553  

Optic Character
-  
-  

Crystal System
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma  
Trigonal  

Birefringence
-9999  
0.009  

Clarity
Transparent  
Transparent  

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Gedrite and Amethyst Optic Character

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

Similar to their colors, Gedrite and Amethyst 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, Gedrite is Transparent while Gedrite is Transparent in appearance.

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