Here are larger pictures of the Princess Royal's sapphire and diamond necklace and earrings, during the dinner hosted by the Governor General of Canada at Rideau Hall, his official residence in Ottawa, on 10th November 2014.
We can also notice that Princess Anne is wearing a bejewelled poppy brooch.
All pictures are by Denis Drever, for Canadian Heritage, on whose Flickr webpage I found these pictures: https://www.flickr.com/photos/canadianheritage-patrimoinecanadien/sets/72157648744077297/?utm_source=Twitter&utm_medium=fr&utm_campaign=