I feel like I need to preface every post by saying that I am not an expert...but to me, these look like modern costume jewelry of the type that J. Crew sells. But if you don't see a mark on them, then they're probably not J. Crew in particular. This style is pretty popular right now. I'd guess that most of those stones are plastic since the brass prongs are just for show and not actually holding anything in place. I haven't seen this specific pair before. The one thing that does look different to me than a lot of modern pieces is that the back of the earrings is solid, it does't have openings behind the stones. And it's smooth, instead of striated, like a lot of modern pieces. Good luck!
