Grandidierite and Meionite Optic Character
Grandidierite and Meionite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Grandidierite Vs Meionite 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 Grandidierite and Meionite 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.