This is a traditional Venetian bead Sommerso translucent clear glass encases aventurina (copper flecks) and suspended colors of glass.
This is one of the first beads a beadmaker in Venice learns to make.
Aventurina is a sparkle of copper particles.
Hole size: 1MM center drilled.
The size is approximately 12mm. Perfect for earrings.
The colors in this authentic Murano Glass bead is a Dark Blue/Cobalt Blue