Sphalerite commonly presents multiple fluid inclusions in form of veils, fingerprints or feathers. Two-phase liquid-vapor fluid inclusions with predominance of the liquid phase and small vapour bubble are the most common. Fluid inclusions often have negative crystals forms and sometimes reach large sizes. These inclusions are easily appreciated in exfoliated crystals were cleavage planes give perfect visibility inside the stone, and also in faceted sphalerites.