Celeb Engagement Rings (PHOTOS); Natalie Portman eco-friendly engagement ring. The jeweller who designed the rings debuted by actress Natalie Portman and her partner Benjamin Millepied at the Oscars on Sunday (26Feb12) has confirmed the couple is secretly married.

The Hollywood beauty prompted speculation about her love life when she flashed a new band beneath her diamond engagement ring on the red carpet at the Academy Awards and again as she presented the Best Actor prize to The Artist's Jean Dujardin.

Representatives for the famously-private couple have declined to comment on the reports, but now former ballet dancer-turned-jewellery designer Jamie Wolf has revealed the rumours are true.

She tells Usmagazine.com, "I designed the rings worn by Benjamin Millepied and Natalie Portman. They were made with recycled platinum and conflict-free diamonds."

Details about when and where the couple exchanged vows have yet to surface.

Picking Wolf to create the wedding rings was an easy choice for the stars - she danced with Millepied at the New York City Ballet and befriended Portman on the set of Black Swan, in which she played a dancer.

She is also the same jeweller the Frenchman approached to create Portman's engagement ring. (c) WENN

Celeb Engagement Rings (PHOTOS) Of The Stars

Angelina Jolie bauble worth $500,000

Kim Kardashian engagement ring cost

Jennifer Lopez Ben Affleck pink diamond ring

Halle Berry engagement ring has hidden code

Kate Middleton and Princess Diana's engagement ring

Natalie Portman eco-friendly engagement ring

Tom Cruise propose to Katie Holmes with 5 carat ring

Britney Spears 3.5 carat engagement ring

Jessica Biel six carat engagement ring

Katherine Heigl engagement ring half mother's platinum band

Jessica Simpson engaged, given ruby ring

Beyonce $5 million engagement ring

Nicole Richie $200,000 4 carat engagement ring

Hilary Duff $1 million engagement ring

Carrie Underwood yellow diamond engagement ring

Mariah Carey 58 pink diamonds engagement ring

Khloe Kardashian engagement ring 9 carat

Seal proposed to Heidi Klum with canary yellow diamond engagement ring

Reese Witherspoon engagement ring vintage-style Ashoka cut