Average weight 5.1 grams Metal: Silver <-- Split -->Diameter 44.5 – 48.3mm. Width 5.0mm Heart size (w) 7.9mm (h) 6 .5mm 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.