Vintage Art Deco 18K Diamond Cabochon Coral Jade Lapis Onyx Floral Brooch

A striking example of late Art Deco jewelry, circa 1930s, this substantial brooch is crafted in 18 karat white gold and brings together antique-cut diamonds with richly colored natural materials in an exceptionally elaborate, highly symmetrical composition. Carved black onyx forms the dramatic scalloped perimeter, while cabochon natural jade, coral, and lapis lazuli introduce saturated green, coral, and blue accents characteristic of the period’s fascination with bold color and contrasting hardstones. Three prominent bezel-set Old European cut diamonds anchor the design: the largest weighs approximately 1.00 carat and grades approximately H–I color and I1 clarity, while the two additional principal diamonds weigh approximately 0.80 carat each and average H–I color with SI1–SI2 clarity. A further approximately 1.75 carats of round diamonds, averaging H–I color and VS2–SI1 clarity, are intricately set throughout the floral white-gold framework. The combination of geometric structure, carved onyx, vivid cabochon color, and substantial Old European cut diamonds gives the brooch remarkable depth and presence, embodying the sophisticated exuberance of late Art Deco design.