Average weight 1.5 grams Metal: 9ct Gold <-- Split -->Diameter 16.0mm Width of thicker side: 5.4mm <-- Slit --> Hallmarking Guide: Gold less than 1g not stamped. More than 1g stamped. FREE UK Shipping*: 5 - 6 days Royal Mail 24 or Special Delivery. Returns: Faulty items can be returned within 7 days. Click for more information.