A diamond is forever, but most reality TV engagements aren't. That doesn't mean we can't have some fun revisiting the stunning rings exchanged over the last two years by former Bachelor and Bachelorette contestants, though.

Sean and Catherine

Engagement announced: March 2013

Sean, who was second runner-up on Emily Maynard's season of The Bachelorette, proposed to graphic designer Catherine Giudici with this 3.15 carat, platinum cushion-cut diamond ring surrounded by 164 smaller round diamonds. The vintage-inspired ring—and the season—was a hit, and the pair are reportedly planning a wedding to be televised on ABC.

See more platinum engagement rings.

Photo: Courtesy of Neil Lane/Getty Images (Inset)

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