Jo is registered with the Goldsmiths Company in London. They test and guarantee the precious metals used in her work conforms to all legal standards of material purity.

Jo's makers mark is on every piece of jewellery (made from precious metal over a certain weight) so you can be confident that you are receiving a authentic piece designed and made by her.

What is a hallmark?

A hallmark: 

• Is a set of component marks applied to articles of the precious metals gold, silver, platinum or palladium
• Means that the article has been independently tested
• Guarantees that it conforms to all legal standards of purity (fineness)
• Guarantees provenance by telling us where the piece was hallmarked, what the article is made from, and who sent the article for hallmarking

This short video explains more about hallmarks 

Find out more:

• The Assay Office
• What is a hallmark
• The National Association of Jewellers
• Guidance Hallmarking: practical guidance - summary

 What to look for and explanation of the mark