Vintage brooch with dark blue gemstones

The brooch is circular in shape and features a large dark blue central gemstone. Surrounding this central gemstone is a pattern of smaller dark blue teardrop-shaped gemstones, arranged in a symmetrical, radiating pattern. Additionally, there are smaller clear or light-colored round gemstones interspersed between the teardrop-shaped ones, adding to the intricate design. The brooch has a vintage or antique appearance, with the metal parts having a gold-tone finish that complements the gemstones. The overall design is ornate and elegant, making it a striking piece of jewelry.