Charoite and Nephrite Optical Properties
Luster
Pearly, Fibrous, Chatoyant
Vitreous, Greasy
Pleochroism
NilArthur Thomas
None
Dispersion
Not Available
Not Available
Transparency
Translucent
Translucent
Refractive Index
1.545-1.560
1.600-1.627
Optic Character
Not Available
Not Available
Crystal System
Triclinic
monoclinic
Birefringence
0.009
0.027
Clarity
Translucent
Translucent
Charoite and Nephrite Optic Character
Charoite and Nephrite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Charoite and Nephrite 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 Nephrite 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 Nephrite Transparency
Similar to their colors, Charoite and Nephrite 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.