Millefiori
Millefiori, Italian for thousand flowers, is a glass technique in which thin rods of glass of different colours are bundled so that their cross-sections form a pattern, usually flowers. The bundle is heated and stretched into a long thin cane, which is then sliced like a stick of rock. Each slice shows the pattern.
The slices are set into or onto other glass and are fused or melted in, to make paperweights, beads, bowls, tiles and panels.
The method has been known since ancient times, and the glassmakers of Murano, in Venice, became famous for it. A similar technique is used to make murrine, which are the slices themselves.