Average weight 5.1 grams Metal: Silver <-- Split -->Diameter 36.5 – 43.4mm. Width 4.4mm. Heart (w) 7.1mm (h) 6.0 mm 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.