An extraordinary one-of-one runway artifact from Chanel’s Fall/Winter 2010 show, this long necklace is constructed as cascading rock crystal chainmail, with real rock crystals throughout the drops and small CC motifs scattered across the chains. Identified as a specially made, unique piece created exclusively for the runway, it sits in the highest tier of collectible fashion: not a production accessory, but a singular object from a specific creative moment.

Its chainmail craftsmanship is emblematic of Maison Goossens, the storied Parisian jewelry atelier that has collaborated with Chanel since the 1950s and is part of the house’s Métiers d’Art ecosystem, linking this piece to a lineage that began with Coco Chanel and continues through the most revered French artisanal workshops. In other words, this isn’t just jewelry, it’s museum-grade collaboration made wearable.

38 1/2 inches (97.8 cm)