Average weight - grams depending on the product Metal: 9ct Gold <-- Split -->Width: 6.9mm Size width x Height/Length – Width of the widest part. These are not precision measurements, only approx. <-- Slit --> Hallmarking Guide: Gold less than 1g not stamped. More than 1g stamped. Hallmarking Guide: Sterling Silver less than 7.78g not stamped but has a 925 mark. More than 7.78g stamped.