How does heirloom jewellery redesign work — and what does it cost?

Redesigning an heirloom sounds like it should be simple — take the stone out, put it in a new setting — but the process behind a good result has several distinct stages, and the cost varies enormously depending on how much of the original piece is being reused versus rebuilt.

The step-by-step process

Assessment. A jeweller examines the piece: the metal's purity and condition (often reading the hallmark), the stones' type, size, and any damage, and the overall structural soundness of the mount. This tells you what can realistically be reused and flags anything that needs attention before work begins — a loose claw, a hairline fracture in a stone, metal that's been over-polished and thinned over decades of wear.

Design consultation. You talk through what you actually want: a style, how you'll wear it day to day, whether you want to keep any element of the original design, and what your budget allows. A good consultation also covers practical trade-offs — a very thin band looks delicate but wears down faster; a very low setting protects a stone but limits how much light reaches it.

CAD (computer-aided design). Most bespoke and redesign work today goes through a 3D CAD model before anything is made, giving you a realistic view of proportions, stone position, and profile before metal is cut or cast. This is the point where changes are cheap — adjusting a CAD file costs far less than reworking a finished piece — so it's worth taking time here and asking for a render or, where offered, a printed resin model to try on.

Stone unsetting. Once the design is approved, stones are carefully removed from the original mount and inspected again under magnification, since exact measurements (diameter, depth, girdle condition) determine how the new setting is engineered around them.

Build. The new piece is made — cast or hand-fabricated depending on the design and workshop — and the stones are set into it. This stage includes any hand-finishing: polishing, engraving, texture work.

Hallmarking. Where the finished piece meets the legal weight threshold, it's sent to a UK assay office for hallmarking before it's handed over. Under the Hallmarking Act 1973, gold over 1g, silver over 7.78g, platinum over 0.5g and palladium over 1g must carry an approved hallmark if described as such — and a significantly altered piece typically needs a fresh hallmark even if the original metal was already marked, since the object itself is legally a new item.

Realistic UK cost bands

Costs vary hugely with metal, complexity, and how much of the original piece survives into the new one, so treat these as bands, not quotes.

Resetting a single stone into a new solitaire-style mount. For a straightforward reset using your existing stone and a simple new mount, expect somewhere around £150–£400 for a very simple job, rising to £650–£1,000+ for 18ct gold and £850–£1,300+ for platinum once you're commissioning a proper bespoke mount rather than a basic reset. The wide range reflects the difference between a jeweller resetting a stone into an off-the-shelf style of mount versus designing something from scratch around it.

Combining several stones into a cluster or new arrangement. Bringing together stones from more than one piece — say, several small diamonds from an old brooch into a cluster ring — typically runs £800–£2,000, depending on how many stones, how intricate the setting work is, and how much new metal is needed.

A full remodel — a wholly new design built around original stones and some or all of the original metal, with significant hand-finishing — typically starts around £1,500 and can run £5,000 or more for elaborate, multi-stone, hand-fabricated work. Most straightforward bespoke remodels using existing stones and metal land in the £800–£2,500 range; the upper end is driven by platinum (which costs more to work than gold), complex stone-setting techniques such as pavé, or hand engraving.

These figures are for labour and new materials only. If your design needs additional metal or stones beyond what you're bringing, that's priced separately — and if your original piece has more metal than the new design needs, many jewellers will credit the surplus scrap value against your bill or return it to you.

What actually drives the cost

Several things move a quote up or down more than people expect.

Metal. Platinum is denser and harder to work than gold, and typically costs meaningfully more in both material and labour than 18ct or 9ct gold for a comparable design.

Setting complexity. A single stone in a simple four-claw mount is quick work. Pavé (many small stones set closely together), hand engraving, and intricate filigree-style work all add substantial hours, and hours are most of what you're paying for in bespoke work.

How much is reused versus rebuilt. A design that keeps the original band and only changes the head is cheaper than one that discards the metal entirely and starts from a fresh casting.

Number of stones and their condition. More stones mean more setting time. Stones with chips or fractures may need protective settings or, occasionally, professional repair or recutting before they can be reset, which adds cost.

Rush turnaround. As with valuations, urgent work usually carries a surcharge, since it means reprioritising a workshop's schedule.

Timeline bands

A simple stone reset into an existing style of mount can be turned around in as little as 1–3 weeks. A bespoke redesign going through the full CAD-to-hallmark process more commonly takes 6–12 weeks from your first consultation to collection, and complex or heavily hand-finished pieces can run longer, particularly around busy periods such as the run-up to Christmas or Valentine's Day when workshops are at capacity. Ask for a timeline estimate at the design stage, and build in a little slack if you need the piece by a specific date — an anniversary, a wedding — since CAD revisions and stone-setting can't safely be rushed without risking the quality of the finished piece.

What to bring to a first appointment

A first consultation goes more smoothly, and quotes come back more accurate, if you bring:

The piece itself, so it can be properly assessed rather than described. Any existing valuation or insurance documents, which give a starting point on metal and stone details. Photographs of styles you like, even roughly — a jeweller can work with "something like this but simpler" far better than a verbal description alone. A rough sense of budget, so the designer isn't guessing at what range to propose. Any family context worth knowing — a stone you definitely want kept versus one you're open to replacing, an engraving to preserve, a size or wearing habit (active hands, existing rings worn alongside it) that affects the practical design.

You don't need a finished vision. Most people arrive with a feeling rather than a design, and the consultation exists to turn that feeling into something a jeweller can actually build.

The bottom line

Heirloom redesign follows a fairly consistent path — assessment, design, CAD, stone removal, build, hallmarking — and the time and cost depend mostly on how much of the original piece survives and how intricate the new setting is. As a rough guide, expect £150–£1,000+ for a single-stone reset depending on complexity and metal, £800–£2,000 for combining stones into a cluster, and £1,500–£5,000+ for a full bespoke remodel, over a timeline of roughly 1–3 weeks for a simple reset or 6–12 weeks for a full CAD-designed redesign. Bring the piece, any existing valuation, and a rough sense of style and budget to your first appointment, and expect the quote to firm up once the jeweller has actually assessed the metal and stones in front of them.