Charoite and Clinochlore Optical Properties
Luster
Pearly, Fibrous, Chatoyant
Pearly, Greasy
Pleochroism
NilArthur Thomas
Distinct: light yellow-green to light bluE
Dispersion
Not Available
Not Available
Transparency
Translucent
Transparent
Refractive Index
1.545-1.560
1.571-1.597
Optic Character
Not Available
Biaxial/+
Crystal System
Triclinic
Monoclinic Prismatic H-M Symbol (2/m) Space Group: C 2/m
Birefringence
0.009
Not Available
Clarity
Translucent
Transparent
Charoite and Clinochlore Optic Character
Charoite and Clinochlore optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Charoite and Clinochlore 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 Clinochlore 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. Clinochlore has Biaxial/+ character.
Charoite and Clinochlore Transparency
Similar to their colors, Charoite and Clinochlore 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.