Los Angeles: 'Monster's Ball' star Halle Berry has sparked rumours that she might be ready to walk down the aisle for the third time after she was spotted wearing a ring.

The 45-year-old actress was caught on camera wearing a golden ring with a large emerald gemstone as center piece during an outing with boyfriend Olivier Martinez on Malibu Beach, reported Ace Showbiz.

She was also spotted wearing the ring days earlier as she and Martinez had a romantic lunch in Beverly Hills on December 29.

"Halle has found her true soulmate in Olivier and it's only a matter of time before they tie the knot. She's madly in love and knows she wants to spend the rest of her life with him. Olivier has been the rock that Halle has never had in any of her relationships," a source said.

After two failed marriages, first to former baseball player David Justice and then to Eric Benet, Berry herself said that she would never get married again.

"I will never, never get married again. I've come to a place where I think two people can share their lives without the ring, without the piece of paper," the Oscar winning actress had said.