A Japanese onigiri, a triangular or rounded-triangular ball of white rice, typically wrapped with a sheet of black or dark green nori, or seaweed. Many platforms depict individual grains of rice across the surface of the rice ball, while others use a smoother or more stylized white surface.

Google and Samsung's initial designs depicted the rice ball at an angle. Facebook's initial design had notably green seaweed.

This emoji predates the inclusion and standardization of emojis within Unicode. It was first added to early Japanese emoji keyboards by SoftBank in 2000.

Rice Ball was approved as part of Unicode 6.0 in 2010 and added to Emoji 1.0 in 2015.