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10 most expensive royal jewellery pieces, ranked: from late Queen Elizabeth's Cartier and 'Granny's Chips' brooches to Princess Diana's Swan Lake Suite, which royal has the most precious piece? | South China
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World's largest diamond Necklace, known as L'Incomparable, the necklace created by luxury jeweler Mouaw… | Expensive necklaces, Expensive jewelry, Beautiful jewelry
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