So much has been said and written about this fabulous diamond that I will just try to summarise a few data points to remember:
It's first record dates back to 1610 when it belonged to Maria de Medici who wore it in her coronation as Queen of France. At the time it was considered the second largest diamond in the world after the Sancy. It has gone form Royal Crowns to pawnbrokers and back a few times and its lineage includes the Royal Houses of France and Navarra, England, Scotland and Ireland, and Prussia.
The Beau Sancy weights c.35 carats, it is a type Illa diamond from the Golconda mines in India and it features a double faced rose cut design.
It will be auctioned by Sotheby's Geneva on May 14th
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