Authentic Venetian Bead in the Serale style(serale: an italian word which means the evening, which was the inspiration for this bead). The size is approximately 16mm diameter and about 7mm at the thickest part. The hole is 1mm which runs through the center of the bead. The gold is exterior and may rub off due to wear and tear or exposure to body oils and lotions. This is not a defect, rather a part of the bead. The colors in this one are shades of Acciaio (light Steel, Gray) Murano Glass.