The basic procedure for creating a hollow bead involves making two widely separated think disk beads on one mandrel. The edges of the disks are then marveled toward each other until they touch. Once the disks are sealed all around, the air trapped inside them expands and puffs the bead out into a spherical shape. Hollow beads refract and transmit light differently than solid glass beads; the beads add a lively transparency.
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