||A hallmark is a series of marks stamped on a precious metal, such as gold, silver or platinum, which guarantees that the metal reaches the legal standard of purity.
The process of hallmarking a piece of gold bullion dates back to the 15th century when craftsmen were required by law to bring their products to The Goldsmiths Hall in London to be assayed or tested. They had to reach the required standard of purity. The system still remains today and it is still a legal requirement for all precious metal products to bear a hallmark.
There is a list of recognised hallmarks that all dealers of metal artifacts need to display. A hallmark consists of a makers mark, the assay office mark, the purity mark and the date. As the trend to buy gold continues, more gold is being produced to meet these demands.