"Whilst it may appear a little understated in comparison to Kate's ring, it exudes the class and quality befitting a Queen." Coming in with the third-most expensive ... in the world in a survey ...

Celebrity engagement rings continue to fascinate fans by the sheer size and cost of these tokens of love. But who's worn the most expensive?

The Mail online has compiled a rich list of the Royal's engagement rings, which reveals those with the greatest value and most rare stones. The Princess of Wales: Value: £500,000+ Ring ...