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