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Anhydrite
Anhydrite

Gedrite
Gedrite



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Anhydrite
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Gedrite

Anhydrite and Gedrite Optical Properties

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Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Pearly, Greasy
For violet varieties
0.01
Transparent
1.570-1.614
-
Orthorhombic
0.042-0.044
Transparent
 
Vitreous
Weak to moderate
0.02
Transparent
1.625-1.718
-
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
-9999
Transparent

Anhydrite and Gedrite Optic Character

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

Anhydrite and Gedrite Transparency

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