If diamonds are a girl's best friend, then sapphires are a life long partner. Just ask Kate Middleton, who was proposed to by Prince William with a 12-carat oval blue sapphire ring surrounded by fourteen solitaire diamonds, that belonged to his late mother, Princess Diana.
Since then, the stone has become a popular go-to for engagement rings. And while the traditional deep blue sapphire styles like Kate's are a classic go-to, designers of late have begun to experiment with different cuts, colours and designs to add a modern twist to the style. See below for 10 of our favourite sapphire engagement rings.