Charoite and Hardystonite Optical Properties
Luster
Pearly, Fibrous, Chatoyant
Vitreous, Resinous, Greasy
Pleochroism
NilArthur Thomas
Not Available
Dispersion
Not Available
Not Available
Transparency
Translucent
Handbook of mineralogy (2001)
Refractive Index
1.545-1.560
1.672
Optic Character
Not Available
Not Available
Crystal System
Triclinic
tetragonal
Birefringence
0.009
Not Available
Clarity
Translucent
Handbook of mineralogy (2001)
Charoite and Hardystonite Optic Character
Charoite and Hardystonite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Charoite and Hardystonite 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 Hardystonite 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 Hardystonite Transparency
Similar to their colors, Charoite and Hardystonite 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.