From Kate’s Royal engagement ring, a Ceylon sapphire ring created by former Crown Jeweller Garrard & Co, with 14 solitaire diamonds surrounding the twelve carat centre stone, all set in 18 carat white gold. First belonging to Prince William’s late mother, Princess Diana.
To the magnificent Cartier Wedding Day Tiara lent to Kate by The Queen for her wedding day in 2011. Made by Cartier in 1936 and originally bought by King George VI for his wife The Queen Mother, the tiara is made up of 739 brilliant diamonds and 149 batons.
Read more about Kate’s jewellery collection at : http://www.marieclaire.co.uk/news/fashion/549601/kate-middleton-jewellery-file-from-her-sapphire-engagement-ring-to-that-zara-necklace.html#index=1