Vintage Oversized Auraura Borialis Austrian Crystal Brooch

Breathtaking Oversized Vintage Auraura Borialis Austrian Crystal Brooch, set in gold. Measures approximately 2.2" wide x .5" high, with dangling AB beads, which really make this piece shimmer and shine! Like most high end costume jewelry made during this period, the piece is unsigned. If anyone has information on the maker, I would appreciate the insight! In perfect condition!