Is it acceptable to have one ring that acts as both Engagement and wedding ring ?
or we need to have two different ? one for engagement and one for wedding ? 

Married folks please suggest. what would be the best thing to do. ? 

buy a diamond engagement ring or gold ring ? but then again if i buy diamond engagement ring i'll have to buy matching band ? 

i seem little lost here. Any input would be highly appreciated. Nepal ko chalan chalti anusar k garda thik hola.

Thanks.