The Edwardian period's signature lacy cutwork is showcased in this antique filigree brooch. A diagonal streak of blue sapphires offers an intriguing accent in this Edwardian antique brooch. Set in platinum, the eyelet edging and spring-curled spirals of this filigree pin soften its rectangular angularity. . Thirty full cut and one rose cut diamond totaling 0.27 carats lend nonstop shimmer to Edwardian jewelry p ieces like this one. Tushnett and Strauss trademark. Circa 1900.