A 19th century golden topaz and diamond tiara/necklace and brooches suite, cased, the necklace composed of graduated oval mixed-cut topaz in foiled closed back gold pinched collet link mounts, with pinched collet set silver and gold mounted graduated quatrefoil links between, set with old brilliant and rose-cut diamonds, with a detachable pendant drop, centred with a cushion-shaped topaz within a foliate surround set with graduated old brilliant-cut diamonds, the cluster having a detachable diamond set ribbon bow pendant surmount and detachable brooch fitting, with two smaller matching clusters each with rose-cut diamond surrounds and detachable brooch fittings, all converting together into a tiara, in fitted green leather gilt tooled case, signed ‘Parkes, 5 Vigo Street, Regent Street, W’, necklace length 36cm, larger cluster length 26mm. £8000-10,000