The ferronnière is a delicate jewelry item worn by women on the forehead and served to help hold the hairstyle in place. It consisted of a chain with fine links - or a textile thread - usually with a single gemstone in the center. The name is derived from a painting, attributed to Leonardo da Vinci, named La belle ferronnière (from French: "the beautiful blacksmith's wife") currently in the Musée du Louvre, Paris.
This Renaissance fashion was revived shortly during the 19th century c.1830-1845. Costume balls were a popular entertainment from the 1820s and portraits were popular sources for inspiration both for clothing and accessories. Adapted from these portraits,the ferronnière started out as a costume accessory but quickly became a fashion necessity. Hairstyles featured face hugging center parted looks that were perfect for a ferronnière. Most of these featured an articulated jeweled drop but occasional designs featured an upright central motif.