Designed as a series of ivy leaves on knife-wire edges, pavé-set with circular-cut demantoid garnets, two leaves highlighted by old brilliant- cut diamonds, embellished throughout with rose-cut diamonds within pinched collet settings, diamonds approximately 11.80 carats total, demantoid garnets approximately 131.75 carats total, detachable to become a brooch, brooch length 23.0cm, tiara diameter 15.5cm, cased