Retro Era Yellow Gold, Sapphire, and Diamond Bow Brooch

This is a substantial Retro-style brooch fashioned as a voluminous, three-dimensional ribbon bow. The base structure is crafted from highly polished yellow gold (likely 14k or 18k), featuring wide, fluid loops that exhibit the bold, sculptural aesthetic typical of the 1940s. Centered atop the gold bow is an intricate spray or starburst motif rendered in a contrasting white metal, possibly platinum or white gold. This floral-inspired spray is pave-set with numerous small round brilliant-cut diamonds and accented with round-cut dark blue sapphires. The sapphires are arranged in clusters and as terminal points on the delicate white metal branches. Regarding condition, the yellow gold surface shows visible micro-scratching, light scuffs, and several noticeable indentations or 'dents' on the lower loops, which is common in hollow-constructed jewelry of this scale. There appears to be some grime accumulation around the stone settings, requiring professional cleaning. No maker's marks are visible from the front view, but the craftsmanship suggests a high-quality mid-20th-century jewelry house. The piece measures several inches in diameter, serving as a prominent statement accessory.