It seems that everything about Tom Cruise and Katie Holmes' relationship has been completely over-the-top, and the bling is no exception. When Tom proposed to Katie atop the Eiffel Tower in June 2005, he gave her this five-carat oval-shaped diamond set in platinum and rose gold, surrounded by smaller diamonds in a pavé setting. The rose gold, which has a shiny rust color, is not used often in jewelry and gives this ring a unique look (as if a five-carat diamond is not unique!). Nearly as wide as Katie's slender finger, this weighty gem sits high and constantly flops to the side of her finger due to its massive size.