I've had an idea for a short story for about a year now. It's been on the back burner because of the novel I'm working on. But essentially, it follows a girl who can mildly control the elements. In her world, there are piece of jewelry that contain the power of the elements, granting the wearer the ability to control them. Now, in my current WIP, I've realized using jewelry in this way could prove helpful to my story. However, I don't want to scrap the original story, because a longer plot is starting to form, and I think it could be really interesting. So I think you can see where this question is going. Should I cut the magical jewelry from one of my stories? Or is it not a big deal to have a similar concept in two different stories? Thanks!