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?

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

Celebrities have been known to splurge on expensive engagement rings. Russell Wilson proposed to Ciara with a 16-carat ring worth an estimated $2 million. In 2016, billionaire James Packer ...

However, the most valuable engagement ring in royal history belongs to someone outside of the House of Windsor. Their dazzling diamond far outshines the most famous royal jewels in elegance and cost.

The most expensive royal engagement ring belongs to Grace Kelly The most expensive royal engagement ring belongs to Grace Kelly, the Hollywood actress who became Princess of Monaco. Kelly’s ...

He had proposed to Phoebe, who works as the global account development director at Freuds+ in New York, with a sapphire engagement ring, during a walk in Central Park, and the couple had a low-key ...

Coming in with the third-most expensive royal ring is the Duchess ... the ring was recently voted the most popular engagement ring in the world in a survey conducted by the Natural Diamond Council.