They are the only type of seed beads that are exclusively handmade, which makes each piece original. There aren’t two exactly identical beads, not even in series with uniform design.
The lamp beads Preciosa® TRADITIONAL CZECH BEADSTM are created by winding of melted glass from one or more glass rods on a wire that is coated with clay. The rods are melted by a special burner (formerly known as a "lamp"). They are shaped either freely by hand or by moulds, tweezers and other glass making tools. They can be decorated with crushed glass, glass strands, overlay, gold or silver foils and by a number of other techniques. Manual manufacture enables almost unlimited combinations of various glass colours on one piece and variations of diverse shapes and sizes.