Charoite and Beryllonite Optical Properties
Luster
Pearly, Fibrous, Chatoyant
Vitreous, Adamantine, Pearly
Pleochroism
NilArthur Thomas
AbsentWalter Schumann
Transparency
Translucent
Gemmological Tables (2004) More from other references
Refractive Index
1.545-1.560
1.552-1.562
Optic Character
Not Available
Not Available
Crystal System
Triclinic
monoclinic
Birefringence
0.009
0.009
Clarity
Translucent
TransparentUlrich Henn and Claudio C. Milisenda
Charoite and Beryllonite Optic Character
Charoite and Beryllonite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Charoite and Beryllonite 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 Beryllonite 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 Beryllonite Transparency
Similar to their colors, Charoite and Beryllonite 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.