These fabulous seed beads are called "lined" beads. They consist of a transparent outer layer with a solid color inner layer. This inner layer is typically silver, bronze, or gold, but can be other colors as well. They tend to be very flashy and reflect a lot of light. Very pretty and always in short supply. These beads are sold in hanks of 20-inch strands, typically with twelve strands per hank. They combine with all other strung Czech beads for the quantity discount.