Rossmanite and Pyrargyrite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Rossmanite and Pyrargyrite 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 Rossmanite and Pyrargyrite 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.
Similar to their colors, Rossmanite and Pyrargyrite 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, Rossmanite is Mineralogy Database (2012) and TransparentWebmineral.com while Rossmanite is Mineralogy Database (2012) and TransparentWebmineral.com in appearance.