Facts in The Necklace
The Avenue des Champs-Élysées is a famous boulevard in Paris, known for its cafes, theaters, and luxury shops. In the mid- to late-19th century, the gardens took on a more picturesque, English style with flowerbeds, groves of trees, and footpaths.
The 20-francs gold coin, a louis d'or, became known as Napoleon gold coins after the change in monetary law at the beginning of the 19th century by Napoleon the first.
The Palais Royal is located in the 1st arrondissement of Paris. At the time this story was written, there was a covered passageway that housed many kind of shops where fine goods could be bought.
Satin is a smooth, silky material that is fairly expensive and objects made of this material generally give the impression of luxury. Fine pieces of jewelry are often contained in such boxes to protect the craftsmanship.