Russell Brand hunting for diamond ring?

If sources are to be believed, British comedian Russell Brand is set to pop up the question to Katy Perry. The 34-year-old star was seen hunting for the perfect band at posh London jewellers Cartier on December 11.

"His face lit up when he saw this one diamond ring. He put it on his hand and he just gazed at it for ages, deep in contemplation," the News of the World quoted a source as saying.

Brand seems a changed man since dating Perry. Earlier this week he admitted marriage was a good idea. "She's the one. I'm a one-woman gentleman now. She's really funny and gorgeous. We're having a lot of fun," Brand said.