Answer by
caftril (176)
Gold clad is marked with various symbols or codes, for example GEP or HGE for gold electroplate, or RGP for rolled gold plate. 1/20 12K GF is a standard mark for Gold Filled jewelry which is at least 5% 12 karat gold by weight. The marking "gold washed" means only a very thin layer of cladding has been applied.