Charoite and Emerald Optical Properties
Luster
Pearly, Fibrous, Chatoyant
Vitreous
Pleochroism
NilArthur Thomas
Strong dichroism: yellow green Lazzarelli
Transparency
Translucent
Transparent, Translucent, Transparent to translucent
Refractive Index
1.545-1.560
1.565-1.602
Optic Character
Not Available
Not Available
Crystal System
Triclinic
Hexagonal
Birefringence
0.009
0.0040-0.0070
Clarity
Translucent
Color grading system
Charoite and Emerald Optic Character
Charoite and Emerald optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Charoite and Emerald 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 Emerald 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 Emerald Transparency
Similar to their colors, Charoite and Emerald 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.