🔍Sonic's rings are made of neodymium, a magnetic metal.
💰The value of Sonic's rings is determined by their weight, which can be calculated using density and volume.
🌈Neodymium rings can come in various colors, such as blue, purple, and pink.
🔋Sonic's rings also contain ring energy, which powers his supersonic transformation.
🤔Sonic's rings may have a different value in different Sonic games, considering their various uses as currency.