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.
Not sure what kind of jewelry you're talking about but you can buy a pre-made setting that will fit the size of stone, get the stone unset from the old mounting and have it reset into the new one. This will probably be the cheaper route. Or, you can have something custom designed - this will be more expensive and you'll have to find a jeweler that does custom jewelry.