A diamond set pagoda brooch,

 with baguette diamond columns and an open work roof set
with rose diamonds in elliptical mille-grain settings,
topped with a brilliant and rose diamond spire.

probably French,
circa 1930.

4.5 cm

Exhibited:

'Chinese Whispers: Chinoiserie in Britain 1650-1930'
at the Brighton Royal Pavilion and Museums, catalogue number A34