What do the letters on gold jewelry mean?

What the letters on gold jewelry mean varies. The letter P means that a piece is plumb and contains an exact amount of precious metal. For example, 14P would be plumb 14-karat and contain exactly 58.5% pure gold. GP indicates that the jewelry is gold-plated, while an R represents rolled gold. The meaning of GF is gold-filled, and the letters HGE denote that a piece has heavy gold electroplating. On 1stDibs, shop a large selection of gold jewelry.