Optic beads by Bruce St. John Maher. These things are incredible! They are hand painted in layers with iridescent paints for a beautiful 3-D effect.(*Very* labor intensive: hand painted in layers and cooked in a kiln between each layer, then faceted and polished.) Each piece is unique, with amazing attention to detail.
The photographs cannot do justice to these items- the 3-D effect is wonderful, and many of the colors change as the piece is viewed from different angles!