This 8mm round bead features transparent Moretti glass encasing .925 Sterling Silver Foil. The hole is approximately 1mm. These Authentic Murano Glass Beads are great for accents, wherever you need a small economical bead. The sterling silver foil gives a brightness to the color. They are handmade and as such will vary in size. This is emerald (smeraldo) in Italian and a rich green.