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Celebrity Engagement Rings: See the Sparklers that Rock

Alexis Bledel and Vincent Kartheiser

Mad Men co-stars Alexis Bledel and Vincent Kartheiser first started openly dating in the summer of 2012 and announced they were engaged in March 2013. The following month, Bledel debuted her engagement ring, an octagonal diamond set in a band with pavé stones decorating the sides.