These lampwork beads have the look of lava or stone due to their unique coating, but they are actually glass. The center focal is approximately 12mm and the side beads are approx. 9mm. The colors are aqua blue, grayish brown and black. Hill Tribe silver tubes and silver beads complete the bracelet. It is adjustable, and will fit a 7 1/2 inch wrist or larger. Matching earrings are also 9mm with sterling silver earwires.