Keira Knightley's relationship is reportedly on the rocks because she is refusing to wear an antique ring lover Rupert Friend bought for her.

'Pride and Prejudice' star Rupert gave the antique white-gold ring to Keira as a "symbol of their love", and has been left hurt by Keira's decision to wear expensive Chanel jewelry instead.

A source close to the pair said: "Rupert bought Keira this antique ring at considerable expense and while it's not an engagement ring, he intended it to symbolize their love for one another."

"But, as the face of Chanel, Keira has obviously been inundated with very expensive jewelry from its fine jewelry collection and has chosen to regularly wear one of its rings instead of the one bought for her by Rupert."

"As a result, the word is that he's made his feelings made known to Keira."

Rupert and Keira - who are rumored to have been dating since December 2005 - are now said to be attempting to get their relationship back on track following the incident.

The source added to Britain's Daily Express newspaper: "It seems these could be testing times for Keira and Rupert. They are both young actors with their careers still very much ahead of them so relationships are never going to be straightforward."

"Hopefully they will work things out."