(Cover) - EN Showbiz - Nikki Reed's engagement ring is a great symbol' of eternal love, according to an expert.

The Twilight star set tongues wagging as she stepped out on the red carpet at the MTV Movie Awards on Sunday wearing a diamond ring on her wedding finger.

The actress has enjoyed a whirlwind romance with partner Paul McDonald after meeting him in March this year.

When asked if she could imagine marrying the former American Idol contestant, she replied that the 26-year-old was "The One".

"This is a modern version of a platinum and diamond eternity ring that could also work as a stunning wedding band," jewellery expert Michael O'Connor told US Weekly. "It features full diamonds surrounded by intertwining platinum, and is a great symbol of two people bonding together for a lifetime. Estimated price tag: $30,000."

Sources close to the couple have confirmed reports that Nikki and Paul are engaged after only three months together. (C) Cover Media