A sautoire is a piece of jewelry, like a necklace, that has a long chain with something hanging from it.
Sautoires are often seen as elegant and fancy.
Examples:
She wore a beautiful sautoire to the party.
The queen's sautoire was made of gold and diamonds.
The sautoire had a big shiny gem on it.
I want to buy a sautoire for my mom's birthday.
The sautoire was so long, it almost touched the ground.
The sautoire sparkled in the light as she walked.