**t only was the watch on its own a beautiful way to connect his beloved mother and new wife, but William also went a step further by embedding a sapphire stone into the stainless-steel style to match Kate's engagement ring - which also belonged to Diana. William presented Kate with the Ballon Bleu de Cartier just before they embarked on their tour of Australia and New Zealand in 2014, and she wore it nearly every day that they were there.