Assay Assured Jewellery Retailers


 ICB DIAMOND is a verified ASSAY ASSURED JEWELLERY RETAILER. The verified website address for this retailer is

112 Princes Gardens, London, England, W3 0LJ

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Report a query with this retailer.

Independent Verification

All precious metal jewellery offered by Assay Assured jewellery retailers carries the legally-required independent hallmark verifying the precious metal content (unless the item is exempt by weight). The retailer is part of a scheme of sampling and testing by Assay Assured to ensure that jewellery exempt by weight from hallmarking is also of the claimed standard - a protection over and above legal requirements.

Accurate Product Descriptions

All products will be accurately described stating the precious metal content.

Independent Arbitration

If you have a query about the precious metal content of your purchase that you are unable to resolve with the retailer, Assay Assured will independently inspect test the article and provide a report on their findings.

Only Genuine Branded Products

Assay Assured jewellery retailers agree not to carry counterfeit branded jewellery on their website.

Our commitment to hallmarking

When it comes to manufacturing jewellery and silverware, precious metals (silver, palladium, gold and platinum) are rarely used in their purest form. Instead they are usually alloyed with lesser metals to achieve a desired strength, durability, and colour. 

It is not possible to detect the precious metal content of an item by sight or by touch. It is, therefore, a legal requirement to have items consisting of silver, palladium, gold or platinum independently tested and then hallmarked before they can be described as such. Items must bear a hallmark at point of sale, subject to the following weight exemptions:

Silver: mandatory for items above 7.78 grams; gold: mandatory for items above 1 gram; palladium: mandatory for items above 1 gram; platinum: mandatory for items above 0.5 grams.

ICB DIAMOND is registered with the ICB TRADE LTD., ensuring our precious metal jewellery is compliant with the UK’s hallmarking regulations. All stock is subject to an internal confirmation process to ensure it meets the UK’s hallmarking regulations before it is dispatched to our customers.

(For articles that are below the UK hallmarking Act’s mandatory weight for hallmarking ICB TRADE LTD operates a separate due diligence process which involves periodic voluntary testing of items that fall below the mandatory weight to ensure they meet the minimum fineness requirement.)

We are an  Assay Assured Jewellery Retailer. Assay Assured status is only given to retailers who have been independently audited and verified by Assay Assured which is run and overseen by the Edinburgh Assay Office, and ensures that all precious metal jewellery (except items exempt by weight) are independently tested and hallmarked.