Vintage Austro-Hungarian Style Ornate Filigree Brooch

This is a vintage, highly ornate costume brooch designed in the Renaissance Revival or Austro-Hungarian style. The piece features a central oval-shaped green cabochon, likely glass or lucite imitating turquoise or jade, surrounded by a double halo of small white seed beads and green rhinestones. The structural setting is crafted from an aged gold-tone or brass-colored base metal with intricate wirework filigree and granulation details. It is further embellished with faceted red and green glass rhinestones arranged symmetrically around the center. Two small cream-colored faux pearls are visible at the lower quadrants. The overall construction is tiered, giving the piece a three-dimensional, architectural appearance. Regarding condition, there is notable aged patina and oxidation to the metal surfaces, which is common for pieces of this era (likely mid-20th century). Several small clear rhinestones appear to be missing from the circular bezel settings at the top, leaving empty 'cups.' There are no immediately visible maker's marks or signatures on the front, though the craftsmanship reflects mid-century costume jewelry trends that prioritized elaborate, heavy aesthetics. The item shows signs of wear consistent with age, including slight surface scuffing on the central cabochon.