A spectacular 19th century diamond brooch, fashioned as a peacock feather in silver on 15ct gold ground featuring an old European cut diamond estimated as 1.05ct to a further surround of 176 mixed old mine and Dutch cut diamonds, hinged spine attached to scrolling undercarriage and pin tests 9ct (repaired), length 90 mm, wt. 19.41g, in fitted silk and velvet lined box.