Take your designs to the next level with 2-Hole Antique Silver (50 pack) Halo metal beads, produced by PotomacBeads, for IrisDuo beads. This exclusive zamak (high quality zinc alloy) metal shape is designed to quickly and easily bezel around the popular 2-hole Marquise shaped IrisDuo beads.. Instantly give your designs using these diamond-shaped beads a refined bezeled look, with a beautiful metal "Halo" bead frame wrapping around each of your chosen IrisDuo beads.