Charoite and Titanite Sphene Optical Properties
Luster
Pearly, Fibrous, Chatoyant
Not Available
Pleochroism
NilArthur Thomas
Green stones strong trichroism: typically colorless greenish yellow brownish to yellow;
Transparency
Translucent
Transparent, Translucent
Refractive Index
1.545-1.560
1.843-2.110
Optic Character
Not Available
Not Available
Crystal System
Triclinic
Not Available
Birefringence
0.009
0.100-0.192
Clarity
Translucent
Transparent
Charoite and Titanite Sphene Optic Character
Charoite and Titanite Sphene optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Charoite and Titanite Sphene 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 Titanite Sphene 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 Titanite Sphene Transparency
Similar to their colors, Charoite and Titanite Sphene 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.