Vintage Leaf Wrap AB Crystal Brooch

Leaf that's shaped like a fur wrap draped around & cascading down. At one point, this seemed to appear to have been more of a silver color, but now it has taken on a muted gold for soft brass colored shade. There's 10 prong set Aurora Borealis crystals. I purchased this from someone who said it is a LISNER. I don't see any Hallmark Stamp on the back side, though. I found something similar online (see pic) but, I'm just really stumped why there is no stamping marked on this. Could be a generic piece of costume jewelry? It's heavy, it does not feel like junk jewelry. I might have one earring, but I'm certain I don't have a matching set. I was attracted to this because I think it looks like angel wings.