Wedding Bands

Whenever my grandma found out that my fiancé was ready to propose to me, she offered him her ring because she wanted to see one of her grandchildren wear it.

I just want to state that I am not picky and I love my ring however my fiancé knows that I wanted silver and my ring just isn’t my style. We accepted it to make my grandma feel loved and I am so proud to be wearing it.

My fiancé wants to go get our wedding bands soon and he said that I could get a whole set if I want and we can store my grandmas ring in my jewelry box and save it for our daughter if one day she wants it. Would this be rude?