While it’s always hard to judge a diamond by a photo, our friends at Ritani.com gave us some perspective on how much Mad Men star Vincent Kartheiser may have dropped on Alexis’s rock.

“Her engagement ring is most likely a round cut diamond set within a hexagonal setting with diamonds on the under gallery,” says Ritani.com’s Kevin Flaherty, “It's a simple platinum band with a few diamonds on either side of the center stone. This style of engagement ring is vintage and especially popular right now.”

Celebrity clients “typically want the best of the best,” says Kevin, so he estimates that the diamonds are at a minimum of two carats and high-quality. Her diamond alone, he says, could easily be worth $80,000 — $85,000 with the setting!


Credit: DeGuire/WireImage Photo: Alexis Bledel's Engagement Ring From Vincent Kartheiser

Regular people in the market for a ring without a celebrity budget can get a vintage-inspired engagement ring with a hexagonal setting for around $5,000.

Our diamond expert also gives some perspective on the diamond’s cut, which many are speculating is hexagonal: Those do exist,” he says, “they are just not very frequently seen on the market. They have 88 facets versus the traditional round diamond which has 57 facets.”

Good to know! Would you want an engagement ring like Alexis Bledel’s?