Earrings by John Field These fish earrings are made from sterling silver and 24ct gold and they measure 16mm x 40mm with a total drop length of 64mm. The technique used is an ancient Korean one called Keum boo, where gold is fused to silver. The silver has been oxidised to blacken it, so that it contrasts with the gold and highly polished silver areas. We also make a matching fish brooch, which can be seen in one of the photographs above. Features Primary Material : sterling silver Other Materials : 24ct gold Fitting Type : Continuous Hoop Dimensions (mm) : 40 x 16 x 1 One of a Kind : No Metal : 24ct gold and sterling silver Hallmarked : No Wire Material : sterling silver Cleaning InstructionsThese earrings have been finished with a clear, protective, anti-tarnish coating. We recommend that when not being worn the earrings are stored in their box or wrapped up so they do not get scratched.