The bead doesn't have "layers"—but rather has scattered random millefiori decoration—forming it's own layer, on the base and below the clear exterior.

In early Venetian millefiori beads, there is some congruency between their star canes and the canes for early chevron beads. But it is more than merely counting layers. And the millefiori beads have more variety (in their canes) than do corresponding star canes used in rosetta/chevron beads of the same time.

Jamey