Brooch Id Help

I bought this interesting looking brooch and would like some help to possibly identify it , difficult to describe , not made from precious metal and looks to cover letters behind the front of the brooch and I think they might read Anna Sui .Any help appreciated I hope the photos are enough to see what I mean.

 

Anna Sui very likely. She uses that carved black rose motif a lot in her jewelry and cosmetic lines. And here's a brooch of hers with similar structure.

Debora

 

Thank you for that most helpful .