From regular appearances on The Antique's Roadshow to cameos in dramas such as Stephen Poliakoff's Joe's Palace

Joe’s Palace by Stephen Poliakoff, BBC TWO

Jewellery specialist, Geoffrey Munn and V&A metals conservator and gemmologist, Joanna Whalley examine and discuss a stunning 1920s Cartier brooch with an enormous emerald centrepiece of just under 40 carats.