From sparkling multi-million-dollar diamonds to custom designs, here are the most expensive diamond rings in the world that ...

Featuring a five-carat emerald diamond surrounded by three ... Coming in with the third-most expensive royal ring is the Duchess of Sussex, whose three-stone diamond style is worth £150,000 ...

Neither Princess Diana or Meghan Markle own the the most expensive royal engagement ring. Someone outside the House of ...

Mariah Carey and billionaire James Packer broke the record for most expensive celebrity engagement ring in 2016 with a whopping 35-carat, emerald-cut diamond.

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?