Multi-colour or bi-metal wedding rings are rings that use more than one metal in their construction. The process of creating a ring with more than one metal requires the separate metals being pressed together under high temperature and pressure. The process is called cintering. This can only be done using specialist equipment under carefully monitored conditions.

The result is some beautifully intricate and interesting jewellery with variations of colours across their surfaces. Most multi-metal rings can be set with stones just as any other ring can be.