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What is a Hallmark?

Written by: laura.durrant Published In: ROOT Created Date: 2013-06-04

A Hallmark consists of several marks applied to articles of the precious metals platinum, gold, palladium and silver, it means that your piece of jewellery has been tested by the assay office and guarantees that your piece of jewellery is exactly what it has been described as.

A complete hallmark consists of three compulsory punch marks:

  • Maker's mark, this is the Goldsmiths own personal mark, normally their initials or name
  • Metal and fineness (purity) mark, if the item is gold for example it would be stamped with which carat it is, for example 9ct, 18ct or 22ct or if it is sterling silver it will be stamped as 925
  • Assay Office mark, in our case London Assay Office, their are 4 Assay offices in the UK

We also add the date mark to our jewellery, which is the year of when the item was made.

Precious metals are rarely used in their purest form and are usually alloyed with other metals to make sure the metal your jewellery is made from is nice and strong and suitable to wear as jewellery. Pure metals are usually too soft and cannot be formed into jewellery easily. It isn't possible to detect the precious metal content by sight or touch. Therefore, it is a legal requirement to hallmark articles containing precious metals.

All of our pieces are hallmarked at the London Assay office so when you receive your piece you will know exactly where it was stamped, who made it, when it was made and which precious metal it was made from.

This is the only time we send our jewellery away, all of our jewellery is handmade in our workshop in Norwich.

Laura :)

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