Charoite and Riebeckite Optical Properties
Luster
Pearly, Fibrous, Chatoyant
Vitreous, Silky
Pleochroism
NilArthur Thomas
X = blue
Dispersion
Not Available
Not Available
Transparency
Translucent
Not Available
Refractive Index
1.545-1.560
1.680-1.698
Optic Character
Not Available
Not Available
Crystal System
Triclinic
monoclinic
Birefringence
0.009
0.005-0.008
Clarity
Translucent
Not Available
Charoite and Riebeckite Optic Character
Charoite and Riebeckite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Charoite and Riebeckite 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 Riebeckite 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 Riebeckite Transparency
Similar to their colors, Charoite and Riebeckite 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.