This small diamond bow brooch has already been seen several times in the past years. I have found no picture of this brooch being worn earlier than 2008, so it might be a recent acquisition/gift.
14 October 2008: State dinner given in honour of the President of Ireland:
23 October 2008: Parliamentary dinner hosted by the King at Oslo's Royal Palace:
13 October 2014: State dinner given in honour of the President of India:
Unidentified date and event (does anyone know which event it is?):