This necklace includes 5 hollow beads that created from boro stringers glass, the beads look like there were made by knitting the glass. The chain is silver sterling 925 snake 1.2mm The beads diameter size is between 20mm to 25mm. All of the lampwork beads are annealed in kiln. This necklace makes a bold statement that will upgrade each performance. Necklace length is 50cm and 5cm extention. All of my jewelry comes with a gift box.