Ruth Negga's 2017 Oscars head piece featured almost 150 carats of Gemfields Mozambican rubies.

Ruth Negga at the 89th Academy Awards

Ruth Negga at the 89th Academy Awards

The 35-year-old actress - who was nominated for Best Actress for her role in 'Loving' at the 2017 Oscars - adorned Irene Neuwirth's show-stopping bejewelled accessory made from responsibly sourced gems to co-ordinate with her rouge lace floor-length Valentino gown at the star studded bash on Sunday (26.02.17).

And the item was specially designed for the brunette beauty by stylist Karla Welch, designer Irene and Gemfields, who joined forces to hand pick the precious stones used, their sizes and to create the delicate piece.

Ruth matched the hair band with an over 40 carat earrings, which included 37.18 carats of the exclusive red gems and 3.26 carats of diamonds, whilst her ring was made of 14.89 carat rubies encased in a white diamond pavé, which was set in blackened white gold.

And the creative mastermind has admitted it was "an incredible honour" for her to come up with the pieces for the Hollywood star.

She said: "It was an incredible honour to design these pieces for Ruth and Gemfields. Ruth has impeccable style and I was absolutely delighted to work with Karla to create such an amazing moment. It's an experience I will never forget."

And the Californian creator has revealed her own earrings were the inspiration behind Ruth's highly coveted jewellery.

Alongside a picture of Irene's green earrings and Ruth's, which she shared on her Instagram account, she wrote: "The earrings I made for Ruth Negga, which she is wearing tonight are inspired by the earrings of mine (sic)."

However, the 'Warcraft' star's pieces were "bigger and finer and more sparkly" than Irene's.

She continued: "...but @karlawelchstylist and I wanted Ruth's Oscar earrings to have a similar feel but to be bigger and finer and more sparkly and more oxidized and more bold ! I think we did it. I loved working with these Mozambique Rubies #gemfieldsxireneneuwirth @gemfields#ireneneuwirth #oneofakind (sic)."