A supplier can quote for a “one-carat lab-grown diamond ring” and still be pricing the wrong replacement. The description leaves out the diamond’s shape and quality, the construction of the mount and even whether one carat refers to the centre stone or all the diamonds combined.
For brokers and claims teams, the useful starting point is a description detailed enough for a jeweller to work from. That gives both the supplier and the policyholder something more precise to discuss than a photograph and an insured amount.
The Institute of Registered Valuers’ updated diamond-screening requirements, reported by Insurance Edge in April 2026, underline the importance of establishing whether stones are natural or laboratory-grown. Once that distinction is recorded, the replacement brief still has to describe the rest of the ring.
Record the ring, not just the centre stone
Start with the available purchase and valuation records, including any documented maker or brand, design name and model number. Alongside the centre diamond’s origin, shape, weight and recorded quality, capture its dimensions where documented. Then describe the metal and purity, band profile, setting and any smaller stones. Keep photographs that show the side as well as the top of the ring.
Lily Arkwright’s lab-grown diamond ring collection illustrates the choices involved when comparing stone size and clarity across ring options. For a claim, those choices need to become a specific description of the insured item; neither a collection image nor an advertised starting price establishes what was lost.
Consider a hypothetical ring with a 1.00ct oval centre and smaller diamonds along its shoulders. A quote for a plain round solitaire with 1.00ct total diamond weight has not answered the same brief. Nor does describing both mounts as “white metal” establish a match between platinum and white gold.
Ask the customer which details they remember most clearly. A low setting or a particular band shape may explain why an apparently similar replacement feels wrong. Record those observations alongside the documentary evidence, without treating recollection as a laboratory finding.
Keep the evidence and its limits together
A receipt records the purchase; a laboratory report describes the stone within the scope of that report; an insurance valuation gives a description and value on a stated basis and date. GIA explains the distinction between a grading report and an appraisal: its grading reports do not assign monetary value.
Retain the issuing laboratory, report number and original document. Read the terminology actually used rather than assuming every report follows the same format. For example, GIA’s current quality assessment for colourless to near-colourless laboratory-grown diamonds uses Premium or Standard categories. Preserve that terminology rather than converting a broad category into an assumed exact colour or clarity grade. A centre-stone report also needs to be connected to the ring’s purchase or valuation records; it does not describe the entire mount.
Missing information should remain visibly unresolved. If the invoice says “diamond ring” and a photograph shows an oval outline, that does not establish a clarity grade or natural versus laboratory-grown origin. The original retailer’s order record may fill the gap. If it cannot, refer the uncertainty for specialist assessment instead of selecting a convenient default.
The NAJ’s valuation guidance makes a useful distinction after a loss. A member asked to assess an unseen lost item should provide a written post-loss assessment rather than a valuation document, making clear that it relies on the client’s information and that the item has not been examined. Keep that limitation with the replacement request.
Give suppliers the same brief
Send each supplier the same dated specification and ask them to flag departures from it. A lower quote may reflect different stone dimensions, fewer shoulder diamonds or a different mount. That is a reason to examine the comparison before treating the price difference as a saving.
Request the complete-ring cost, identifying what is included for manufacture, setting, engraving, VAT and delivery where applicable. Ask whether the quote relates to a selected diamond or a specification still to be sourced, how long it remains valid and what availability assumptions it contains.
Where the original design is discontinued, show the customer the proposed differences before commissioning the replacement. A larger centre stone does not answer an objection about a missing halo or an altered band. Let the jeweller explain what can be reproduced, and let the claims team assess that proposal against the cover and evidence.
Explain the settlement route separately
The replacement specification, insured amount and cash offer answer different questions. Policy wording and the circumstances of the claim govern the settlement; an insured value should not be presented as a promised cash payment.
The Financial Ombudsman Service’s guidance on settling home insurance claims says a replacement should ideally match the lost item. Where an exact match is unavailable, the closest equivalent should be broadly as good or better, taking account of what matters to the customer and what is available.
The cash distinction matters too. If the customer chooses cash instead of a fair replacement offer, payment may reflect the insurer’s replacement cost. Where the insurer chooses cash settlement, the Ombudsman says the amount should reflect the customer’s cost of repair or replacement. A cheaper supplier quotation therefore needs an explanation of both what it would provide and how it relates to the settlement offered.
Keep the final specification after settlement
When a replacement is supplied, retain its final specification, photographs and accompanying reports. Any agreed departure from the original should be clear, with the reason recorded. Check whether the policy’s item description and sum insured need updating through the insurer’s normal process.
The next renewal or claim should start with the ring the customer now owns, rather than the description that was found wanting this time.
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