Can you change white gold to yellow gold ?

I don't know if you could have it gold plated. But you can't turn it back into a gold ring - it would have to be melted down and the extra alloys taken out (Nickel or palladium)

I had to google this and apparently not, because its a different metal , unless you get it plated and not dipped

I know that if you don't get white gold rhodium plated every couple of years or so then the white look fades and I think it does go back to yellow gold eventually. I have a ring that used to be a mix of white and yellow gold when I first got it and now it's all yellow gold. Apparently there's no such thing as 'white gold' - it is just yellow gold covered in rhodium so if you're patient then it should turn back to yellow by itself I think over time. (I might be completely wrong though!)

Ok... thanks

https://puregoldplating.co.uk/services/ This company brushes gold plating onto things and it says they do jewellery

We are able to carry out ‘selective plating’ if required. This involves electroplating part of a single item.

Which means they don't dip the whole thing. Obviously there isn't any prices online! But might be worth contacting them - or ask in a local jewellers.

I tried googling but also seemed to find conflicting answers so think I need to contact the jeweller