A 22 inch, hand-knotted, necklace made of Tuff (white lava) and Torch-Work Glass beads.
The glass beads were made by Sharon Rymann, Catalina Glass (https://www.etsy.com/shop/catalinaglass). The fancy glass in the beads is called 'Raku'. Amber glass is used as a foil for the Raku.
The Tuff beads came from Bead Inspirations (https://www.beadinspirations.com). Tuff is what you get when volcanic fly ash is compressed and heated during an eruption.