Vintage Italian Micro Mosaic Brooch depicting Rialto Bridge

This is an oval-shaped vintage Italian micro mosaic brooch featuring a detailed depiction of what appears to be the Rialto Bridge in Venice. The central mosaic is exceptionally fine, composed of countless minute tesserae that create a picturesque canal scene. The bridge itself is rendered in shades of brown, beige, and olive green, with architectural details clearly visible. Below the bridge, the canal waters are portrayed with a spectrum of blue and white tesserae, and a lone yellow gondola-like boat is centrally positioned. The mosaic is set within a black border, which in turn is encased by an ornate gilt metal or yellow gold-filled frame. This outer frame exhibits intricate filigree or chased work, featuring a repeating pattern of scrolls and perhaps a beaded edge, indicating fine craftsmanship. The tesserae appear to be well-preserved, with no obvious missing pieces, though a slight discoloration or darkening of the grout might be present from age. The overall condition suggests it has been cared for, though the reverse side, which would reveal the pin mechanism and any maker's marks, is not visible. Given the style and fine detail of the micro mosaic, this piece likely dates from the late 19th to early 20th century. The craftsmanship is high quality, especially evident in the precision of the mosaic work and the decorative metal setting. The size appears to be substantial, suitable as a statement piece.