Ferro-axinite Axinite-Fe and Iolite Optic Character
Ferro-axinite Axinite-Fe and Iolite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Ferro-axinite Axinite-Fe Vs Iolite 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 Ferro-axinite Axinite-Fe and Iolite 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.