Kim Basinger was married to Alec Baldwin (right) for nine years

She is auctioning four items, including a Tiffany ring valued at up to $40,000 (�22,000), at Christie's in New York in aid of an animal charity.

Basinger is also selling an eternity ring, diamond bracelet and necklace valued together at $48,000 (�26,000).

Last month the couple settled a custody battle over their daughter, Ireland.

Basinger, whose career was resurrected with her appearance in 8-Mile, married Baldwin in 1993.

They split in 2002 and became embroiled in a bitter public feud over their daughter.

The sale includes a Tiffany engagement ring, reportedly given to her by Baldwin before they wed.

The 3.7-carat diamond mounted on an 18-carat gold band is expected to reach up to �22,000 when it comes up for auction.

"It's a good cause. And how many women do you know who wear their ex-husband's jewellery after they've divorced?," she told the New York Daily News.

There is also a diamond necklace and a diamond and platinum eternity band included in the auction on 20 April.

The money raised will be donated to the Performing Animal Welfare Society, which supports abandoned or abused animals or victims of the exotic animal trade.

Baldwin recently told a magazine he wanted to write a book about divorce, bringing together a compilation of essays about people's experiences.