WHAT NEEDS TO BE HALLMARKED?

Any article described as being wholly or partly made of gold, silver, platinum or palladium that is not covered under exempt articles. Main Exemptions: Articles below a certain weight are exempt from hallmarking. The exemption weight is based on the weight of the precious metal in the article, excluding, for example, diamonds, stones etc., except in the case of articles consisting of precious metal and base metal in which case the exemption weight is based on the total metal weight:

• Silver 7.78 grams

• Palladium 1.0 gram

• Gold 1.0 gram

• Platinum 0.5 grams

Any pre-1950 item may now be described and sold as precious metal without a hallmark, if the seller can prove that it is of minimum fineness and was manufactured before 1950. 

Click here to see Hallmarks Dealers Notice 

https://files.ekmcdn.com/b1f5ce/resources/other/dealers-notice.pdf