Charoite and Fire Agate Optical Properties
Luster
Pearly, Chatoyant
Waxy, Vitreous, Greasy, Silky
Transparency
Translucent
Translucent
Refractive Index
1.545-1.560
1.530-1.543
Crystal System
Triclinic
Trigonal
Birefringence
0.009
0.003-0.009
Clarity
Translucent
Translucent
Charoite and Fire Agate Optic Character
Charoite and Fire Agate optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Charoite and Fire Agate 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 Fire Agate 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 Fire Agate Transparency
Similar to their colors, Charoite and Fire Agate 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.