Charoite and Hureaulite Optical Properties
Luster
Pearly, Fibrous, Chatoyant
Vitreous, Greasy
Pleochroism
NilArthur Thomas
Colorless yellow to pale rose reddish yellow to reddish brown.Anthony et al
Dispersion
Not Available
Not Available
Transparency
Translucent
Transparent
Refractive Index
1.545-1.560
1.647-1.667
Optic Character
Not Available
Not Available
Crystal System
Triclinic
Monoclinic Prismatic H-M Symbol (2/m) Space Group: C 2/c
Birefringence
0.009
0.012
Clarity
Translucent
Transparent
Charoite and Hureaulite Optic Character
Charoite and Hureaulite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Charoite and Hureaulite 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 Hureaulite 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 Hureaulite Transparency
Similar to their colors, Charoite and Hureaulite 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.