The Connaught family at the 1911 coronation of George V, from The Golden Book of Royalty, showing what the - edit Sweden - [Norway] royals wore.
Edit: sorry for confusion.
Edit: I don't think Queen Maud, being a crowned head, attended in 1911. The conventions were modified for the 1937 coronation.
--Previous Message-- : I think Queen Maud had worn her weddinggift : pearl tiara at her parents coronation. Still : the emerald parure is grander so im glad the : crownprincess got to borrow it from her : mother. Queen Maud may have needed the other : tiara for other events surrounding the : coronation. : : --Previous Message-- : Maybe Martha wore the emerald parure because : it had appeared at the previous coronation : in 1911? That's a nice mark of continuity.