An Art Deco Platinum, Diamond, Seed Pearl and Sapphire Brooch, in an openwork design with millegrain edgework, containing six old European cut diamonds weighing approximately 2.00 carats total, numerous old European and sound single cut diamonds weighing approximately 2.85 carats total, four baguette cut diamonds weighing approximately 0.48 carat total, five round cabochon cut sapphires weighing approximately 5.00 carats total, 12 rectangular step cut sapphires weighing approximately 1.10 carats total, seven old Swiss cut synthetic sapphires, and 14 seed pearls. 12.75 dwts.