Antique Victorian Gold Opal and seed Pearl Pinwheel Flower Brooch

A gorgeous little Victorian pin (ca. 1890s). Gold tone, not tested by probably at least 9K based on other pins from the same maker/shop. A beautiful opal cabochon in the center, with swirls radiating outward. Tiny seed pearls adorn every other swirl. Additional textured gold details are in between the swirls. Appears to have the original C clasp, not marked. Very good condition, some minor oxidation.