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Your Ultimate Guide To The Most Famous Royal Engagement Rings

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27. Crown Princess Mette-Marit Of Norway
The relationship between Crown Prince Haakon and Mette-Marit has stirred up quite a bit of controversy for a variety of reasons, but let's just focus on the facts of the ring for now. The diamond and ruby ring holds great significance in the family, as it was worn by both his grandmother and his mother.