Charoite and Carnallite Optical Properties
Luster
Pearly, Chatoyant
Greasy
Transparency
Translucent
-
Refractive Index
1.545-1.560
1.467
Crystal System
Triclinic
Orthorhombic
Birefringence
0.009
0.0270
Charoite and Carnallite Optic Character
Charoite and Carnallite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Charoite and Carnallite 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 Carnallite 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 Carnallite Transparency
Similar to their colors, Charoite and Carnallite 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.