At the time, it was hard to get a look at the ring up close and personal.
According toStyleCaster, the four-caret ring was purchased for $81,250 at a Sotheby’s jewelry auction.
How Mary-Kate Olsen's Engagement Ring Made A Unique Statement
Many were able to spot that Mary-Kate Olsen's engagement ring was a classic Cartier ring that dates back to 1953.
