Upgrade gold with copper at smithing table

Giving a new use to copper so that it is not solely for building blocks so that people who dont enjoy building will still have a use for copper, I think that we should be able to upgrade gold using copper at a smithing table to create rose gold items. Rose gold in real life is a copper-gold  alloy.

What rose gold would do in game, is it would be basically just like regular gold but slightly stronger (ex- a rose gold sword would do 5 attack damage) and with durability similar to iron. Piglins would still be angry at people who wear rose gold armor because it is not pure gold. Rose gold items would have the same enchantabillity, if not higher than gold.