Who says that your engagement and wedding band have to match.? Why not mix it up a bit by choosing different colored metals for each one or add textures on one of the rings.
This picture shows a recently completed bridal set of a diamond white gold engagement ring matched with a rose gold wedding band.
The diamond engagement ring was made in 14k palladium white gold with a 0.33ct/4.4mm recycled Harmony diamond set in a prong setting. The 3.5mm wide 14k rose gold wedding ring is a contoured shadow band, shaped to match the outside contoured of the engagement ring to fit snug against it.