Beads: Authentic Firefly Glass Vermeil: 18k White Gold Clasp: Infinity Clasp Chain Length: Adjustable up to 20" Base: .925 Sterling Silver Time to #GLOWUPThis is Firefly Glass, It's designed by NOGU Studio in Toronto. Nope, there are no electronics involved. The necklaces are made of genuine lampwork hand-blown glass and once energized under a light source emit a spectacular glow. They are the grown up luxury version of your favorite glowing baubles as a kid.During the blowing of the glass, smal Mermaid Glass, Silver Mermaid, Clasp Necklace, Free Bracelet, Bracelet Argent, Summer Accessories, Glass Necklace, Firefly, Bracelet Gift