Unusual Flower Smoke Rhinestone Brooch

I really don't know much about it but I just loved it. I think maybe a unsigned Krementz. It actually came in a box lot and don't have a lot of money in-but to me it is priceless. I love the way they center stone and the single bud stone are cut-lots of multiple facets underneath. I am only curious who would make this beauty and not sign it? It measure 3x3.