Vintage French Jet Glass Individually Knotted Bead Necklace

This is a continuous strand (opera or rope length) necklace composed of faceted opaque black glass beads, commonly referred to as French Jet. The beads are approximately 8mm to 10mm in diameter and feature multi-faceted geometric cutting that creates a subtle reflective shimmer across the dark surface. Each bead is meticulously hand-strung and individually knotted on what appears to be a black silk or heavy cotton cord, a technique used traditionally to protect the beads from rubbing and to prevent loss if the strand breaks. The construction lacks a clasp, suggesting it is a 'flapper style' long strand designed to be draped or doubled over the head. The condition is fair to good, with visible evidence of surface wear including minor flea bites and small chips on the faceted edges, which is typical for vintage glass jewelry. Some minor lint and surface dust are present between the knots. This piece likely dates from the early 20th century, specifically the Art Deco period (circa 1920s-1930s), when black jewelry was highly popular. The uniform spacing and secure knotting indicate quality vintage craftsmanship.