Vintage Silver-Tone Brooch with Blue Marquise and Round Rhinestones

This is a vintage silver-tone brooch, likely crafted from a base metal with a rhodium or silver plating, presenting a lustrous, polished finish. The design features a stylized botanical or organic motif, resembling intertwined branches or leaves. It incorporates numerous marquise-cut rhinestones in varying shades of blue, ranging from a deeper sapphire-like hue to a lighter sky blue, alongside smaller round-cut clear or light blue accent rhinestones. The marquise stones are bezel-set or prong-set within the leaf-like structures, while the smaller round stones appear to be pave-set or individually prong-set adding sparkle. The overall construction suggests a layered, dimensional quality, enhancing its visual interest. The piece exhibits a generally good condition for its age, with only minor wear visible on the metallic surfaces consistent with vintage jewelry, such as slight surface scratches or a gentle patina that has not significantly dulled its shine. There are no immediately obvious missing stones or major structural damages. The craftsmanship appears to be commercial grade, indicative of costume jewelry from the mid-20th century, possibly dating from the 1950s to 1970s. The arrangement of the stones and the flowing form give it an elegant and classic aesthetic, suitable for accessorizing garments. No discernible maker's marks or signatures are visible from the provided image, precluding identification of a specific manufacturer.