The dress mentioned was own by the Queen of France in 1610, when she was the queen consort for King Henry IV of France. Her name is Marie de' Medici, she's not French, but she was the member of famous Italian family, Francesco I de' Medici, Grand Duke of Tuscany and she the sixth daughter of the family. As wife of Henry IV, queen of France. Like most French
royals, she had expensive tastes in clothes. So much, in fact, that she almost
bankrupted France with her extravagance.
The dress that she wore above contain 3,000 diamonds in that very one dress. Of course, at
that time diamonds were valued less than pearls. But she had 39,000 tiny pearls
in that dress. It cost the equivalent of $20 million dollars in 1606. She
wore it once. Marie’s son, Louis XIII, ruled France from 1612 to 1617
but they were exiled 1631. Marie died in poverty.