Always hard to tell with Quartz - the round shape makes me think there is a possibility of something. It was found at a site where other things found I assume. Can you show more pictures of the edges all around? For me hard to say 100% without holding but can say I would have brought it home as well. Sorry not much help.
Could of been something they were thinking on using but just never got around to. I find small flint cobbles here that show slight work on them a little chip here and there and nothing else.