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Close-up of a textured silver-toned metal band with engraved hallmarks including '925' and a heart symbol, photographed against a gray brushed background.

Hallmarking

Hallmarking

Every Oolo piece crafted in precious metal is hallmarked where required by UK law. Applied by an independent Assay Office, a hallmark is your assurance of the metal's authenticity and fineness—a discreet mark of quality, integrity and craftsmanship. It reflects our commitment to creating jewellery that is designed to endure, made with honest materials and intended to be worn, collected and treasured for years to come.

Please see the London Assay Office page for more information 

Link to this page:

https://www.assayofficelondon.co.uk/hallmarking/what-is-a-hallmark

 

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