Charoite and Anhydrite Optical Properties
Luster
Pearly, Fibrous, Chatoyant
Pearly, Greasy
Pleochroism
NilArthur Thomas
For violet varieties
Transparency
Translucent
Transparent
Refractive Index
1.545-1.560
1.570-1.614
Optic Character
Not Available
Not Available
Crystal System
Triclinic
Orthorhombic
Birefringence
0.009
0.042-0.044
Clarity
Translucent
Transparent
Charoite and Anhydrite Optic Character
Charoite and Anhydrite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Charoite and Anhydrite 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 Charoite and Anhydrite 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.
Charoite and Anhydrite Transparency
Similar to their colors, Charoite and Anhydrite 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, Charoite is Translucent while Charoite is Translucent in appearance.