A turquoise and diamond tiara and pair of brooches, late 19th century, the tiara set with foliate

A turquoise and diamond tiara and pair of brooches, late 19th century, the tiara set with foliate spikes of turquoise cabochons and cushion-shaped and rose-cut diamonds, mounted in silver and gold on a steel frame, inner curve 39cm, height at centre 6cm, several detachable elements deficient; together with two brooches designed as birds in flight, pavé-set with turquoise cabochons and seed pearls, their eyes set with rubies, mounted in silver, 3.3 and 2.2cm respectively