Coldplay's Chris Martin has praised Rihanna's new single.

The Bajan beauty is releasing the song 'Diamonds' off her forthcoming new album, which is reportedly set for a November release.

It was aired on radio last week and was later uploaded online for the public to hear, with fans giving the track a good reception.

Coldplay star Chris Martin took to Twitter to speak about his wife Gywneth Paltrow's birthday before praising Rihanna and Mumford & Sons. He said:

"OK this week: our favourite actress had a birthday, we danced to She's So Cold by the Stones...

Martin continued: "...and we got two new favourite songs to listen to: Mumford & Sons' fantastic Hopeless Wanderer and Rihanna's beautiful Diamonds. CM."

Rihanna teamed up with Coldplay for their 2011 track 'Princess of China', which they have since played live together.