Where can I repurpose my old jewelry to something more modern?

I just received jewelry from my mom. It is a quite old piece. I don't know what to do with it. If i know it has a lot of sentimental value for my family and cost a lot of money. I just think I should repurpose it but without losing the value of it.
How can I do? where should I go?
I went to a jeweler but they do not have professional expertise in design.