Mary-Kate Olsen’s Engagement Ring: Details!

Posted Friday March 7, 2014 2:38 PM GMT

She’s a sophisticated woman with impeccable taste so choosing the perfect engagement ring for Mary-Kate Olsen was indeed a challenge for Olivier Sarkozy.

However, the French businessman appears to have knocked it out of the park with a vintage Cartier sparkler he purchased at a Sotheby’s auction on February 6th.

According to the auction house, Sarkozy paid $81,250 for the 4-carat European-cut ring, made in 1953, that also includes 16 calibre-cut sapphires and 1.5 carats of additional diamonds.

Meanwhile, Mary-Kate’s sister Elizabeth is keeping everything under wraps for the time being- when asked about the engagement, she told press, “I’m not saying a thing!”

Photo Credit: WireImage, Sotheby's