This iridescent Czech glass and antique button necklace will add a splash of mermaid sparkle to your style. This necklace features a sliding clasp that enables you to adjust its length to suit any neckline. You can wear it as a choker, as a long pendant, or anywhere in between. Every antique button is a one and only, chosen just for you, and so will not be identical to the image. In this piece: Small antique brass button, circa 1880-1918 chosen from our collection. Large floral glass button hand-pressed in an antique mold in the Czech Republic, using a centuries-old process. Two brass stampings made today in the USA in antique dies. Antiqued brass chain. Chain adjusts from a 15"" choker to 32"" long pendant with sliding clasp.