According to the sleuths at Stylecaster, Olsen’s engagement ring is a vintage Cartier (so Mary-Kate), purchased at a Sotheby’s jewelry auction in NYC on February 6.
The center European-cut diamond clocks in at approximately four carats framed by 16 sapphires, and the petals are set with single-cut diamonds.
The circa 1953 ring was originally owned by a Tennessee jewelry collector and was estimated to go for between $40,000 and $60,000 at the auction. It was ultimately purchased for $81,250.
That’s a relatively small sum in comparison to Kim Kardashian‘s engagement ring from Kanye West, for instance, is a perfect, D flawless cushion-cut diamond ring created by Lorraine Schwartz that’s estimated to be worth upwards of $8 million.