What type of necklace is this vintage piece?

This is a vintage black glass choker necklace strung on a chain, designed to sit closely around the neck.

What materials are used in this vintage necklace?

The necklace features faceted black glass beads strung on a metal chain.

What is the length of this vintage black glass choker necklace?

The necklace measures 16 inches long with an additional 2 3/4 inch bead extender for adjustable length.

What defines vintage costume jewelry like this necklace?

Vintage costume jewelry typically refers to decorative pieces made from non-precious materials, popular in past decades, valued for their style and craftsmanship.

How can I care for a vintage black glass necklace?

To care for a vintage black glass necklace, gently clean the beads with a soft cloth and avoid exposure to harsh chemicals or water to preserve its condition.