Average weight 5.8 grams Metal: Silver <-- Split -->Diameter 30.5 x 42.3mm. Width 2.4mm Width of balls 6.3mm Width is width of thickest point along the band, unless stated otherwise. <-- Slit --> Hallmarking Guide: Sterling Silver less than 7.78g not stamped but has a 925 mark. More than 7.78g stamped.