Four-Claw Solitaire 0.70 ct — Lab-grown

The number above is a placeholder until a stone is allocated to your order. The report supplied with your ring carries its own unique number, which can be checked on the issuing laboratory’s public database.

The statutory exemption for this metal is 0.5 g. At 5.4 g this ring is over it, so under the Hallmarking Act 1973 it may not be described as precious metal unless it is hallmarked. It is. How to read the marks

Claws hold the stone from above, which lets in the most light but leaves the metal proud of the band. Claws can catch on knitwear and soften with years of wear. Have the setting checked every 12 to 18 months.

We do not claim that any ring is guaranteed to fit. Measure in the afternoon and measure more than once. UK sizes in millimetres

Nickel-safe: nickel release is tested to UK REACH limits of 0.5 micrograms per square centimetre per week for items in prolonged contact with the skin. Lead and cadmium are within the limits set by the same regulation.

We do not describe any item as hypoallergenic. That word is not a permitted description and would tell you nothing measurable.

Take the ring off for the gym, gardening, swimming and household cleaning. Warm water, a drop of washing-up liquid and a soft brush is enough. Keep it away from bleach and chlorine. Platinum is denser than 18ct gold and scratches into a soft surface patina rather than losing metal.

Have the setting checked every twelve to eighteen months. No setting holds a stone permanently and we do not tell you otherwise.