As far as I am aware the brooch I have dubbed the emerald palm tree brooch and the wide emerald and diamond bracelet were first worn by Queen Elizabeth the Queen Mother during the South African tour in 1947.
So far I have spotted the jewels on HM on two occasions: a Garden Party at Bloemfontein and a Garden Party at East London.
At Bloemfontein
Later during the tour, HM wore these jewels for a Garden Party at East London.
As I have argued previously, these jewels were not a Silver Wedding gift from the King. Once again I strongly suspect that these were part of Mrs Greville's collection.
Franck has previously noted that the bracelet was from Mrs Greville.