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Anhydrite
Anhydrite

Ludlamite
Ludlamite



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Anhydrite
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Ludlamite

Anhydrite and Ludlamite Optical Properties

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, Pearly
-
0.02
-
1.653-1.693
-
monoclinic
0.038-0.044
TransparentUlrich Henn and Claudio C. Milisenda

Anhydrite and Ludlamite Optic Character

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

Similar to their colors, Anhydrite and Ludlamite 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.