Few things could upstage a performance by then–soon-to-be Oscar winner Lady Gaga for her then–soon-to-be Oscar-winning song “Shallow,” particularly one in which she and her co-star and rumored lover (okay, the rumors there are shaky, but whatever) shared one of the most sexually tense moments in awards show history. But if anything could, it’s a 141-year-old, $30 million rock.

When Lady Gaga arrived on the red carpet in a black Alexander McQueen gown and matching leather gloves, she was also wearing a striking yellow diamond — the kind of diamond that has, like, a name.

That name? The Tiffany Yellow Diamond, a 128.54-carat stone that was popularized in a publicity shoot for Breakfast at Tiffany’s on the neck of Audrey Hepburn, who was also the last person to wear it. It didn’t look the same, however — Gaga’s is a much more modern take on Hepburn’s version. Meanwhile, we can safely assume that its resemblance to Kate Hudson’s “Isadora” necklace in How to Lose a Guy in 10 Days was coincidental.


Audrey Hepburn wearing the Tiffany Yellow Diamond in 1961.
Paramount/Getty Images

According to the New York Times, it’s likely one of the biggest jewelry deals in red-carpet history. Gaga, however, is already a Tiffany spokesperson, so it’s not a total surprise that she was decked out in Tiffany diamonds. The thing that makes it special is that this is one of the largest diamonds in the world, and the Oscars are the crown jewel (pun intended) of Gaga’s awards circuit looks for A Star Is Born, which have harked back to old Hollywood glamour and the Audrey Hepburn era.

Watch the necklace sparkle in the clip of Gaga’s performance below.