1, Cartier (1847 Paris, France) 2, Tiffany (Tiffany &; Co) (new york, USA, 1837) 3. Bulgari (Italy, 1884) 4. Van Clive &; Yabao (1906 Paris, France) 5, Harry Winston Harry Winston (1890 new york, USA) 6, Dreier (1837 Paris, France) 7, Blue Nile (1999 USA). (1858) 9. Mikimoto 1893, Swarovski 10.

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