Keith Urban buys Kidman $73,000 ring

Keith Urban has bought wife Nicole Kidman a $73,000 Cartier Trinity ring.

The actress will be given the jewellery after she gives birth to their child in July, according to In Touch.

A source commented: "It's three rings intertwined, so it's very symbolic. It's three turned into one and that's how it will be with Keith, Nicole and the new baby."

The Cartier Trinity was designed in 1924 and features multi-coloured pavé diamonds.

Cameron Diaz and Katie Holmes both own the same ring.