Few UK jewellers publish real numbers for what a commission actually buys, which leaves most people guessing between a vague "starts from" figure and a final invoice that can come as a surprise. The bands below describe what you genuinely get at each level, as of 2026, based on current UK stone and labour pricing.
Why nobody publishes this, and why it matters
Bespoke pricing is workshop-specific, so jewellers are reluctant to commit to numbers that might undersell their premium work or overpromise on their entry-level offering. That caution is understandable, but it leaves buyers unable to sanity-check a quote or set a realistic budget before their first consultation. The bands that follow aren't a price list, they're a guide to proportion: what trade-offs exist at each level, and what tends to push a commission from one band into the next.
Around £1,500: entry-level bespoke
At this level, you're commissioning a genuinely custom setting, not buying a stripped-down version of something bigger. A simple solitaire, a low-profile halo, or a delicate band with a small central stone are all realistic within this budget, made in 9ct or 18ct gold, or occasionally platinum on the smaller and simpler end of that range.
The stone is the constraint. A modest lab-grown diamond, typically 0.3 to 0.5 carats, costs roughly £150 to £500 as of 2026, which leaves enough of the budget for a proper handmade or CAD-cast setting and workshop labour. A comparable mined diamond of any real visual size is out of reach at this budget; natural stones start becoming viable only from around 0.15 to 0.2 carats at this price point, which will read as noticeably small. Moissanite or small sapphires are common alternatives that stretch the visual size further for the same money.
What you don't get at £1,500: pavé detailing, hand engraving, unusual metal combinations, or a large centre stone. The design has to be simple because there's limited room in the budget for extra bench hours.
Around £3,000: the mid-range sweet spot
This band lines up closely with what several UK surveys put forward as a typical or median engagement ring spend, and it's where most bespoke commissions in Britain actually land. It buys meaningfully more design freedom: a twisted or split band, a hidden halo, a fuller pavé shoulder, or a more considered platinum setting rather than gold.
On the stone side, £3,000 opens up two real paths. A lab-grown diamond in the 0.75 to 1 carat range, of good colour and clarity, typically costs £400 to £900 as of 2026, leaving substantial budget for a well-made setting and finer detailing. Alternatively, a mined diamond of around 0.3 to 0.4 carats, decent but not top grade, sits in a similar price bracket to that lab-grown stone once setting costs are included, giving buyers who specifically want a natural stone a genuine, if smaller, option.
Around £5,000: more generous stone and setting
At £5,000, the trade-off between stone size and setting complexity starts to ease, and this is roughly where London-area average spend has sat in recent years. Platinum becomes the more natural default rather than a stretch, and more intricate settings, hand-finished detailing, or a coloured gemstone centre such as a fine sapphire or ruby all become realistic without eating the entire budget.
A lab-grown diamond of around 1 to 1.5 carats in strong colour and clarity typically costs £600 to £1,500 as of 2026, leaving several thousand pounds for a genuinely elevated setting. A mined diamond of comparable visual impact, around 0.4 to 0.6 carats at a good grade, occupies a similar overall price once setting is added, so the decision at this band is less about affordability and more about which trade-off, mined origin versus visible size, matters more to the couple.
£10,000 and above: where mined diamonds and fine coloured stones become straightforward
Above £10,000, budget stops being the limiting factor for most conventional designs, and the conversation shifts to what specific stone, cut and provenance is wanted. A mined diamond of around 1 carat at a good commercial grade, sometimes referred to as G colour, VS clarity as a common benchmark, typically costs £3,500 to £8,000 or more as of 2026, comfortably fitting within this band alongside a fully bespoke platinum or 18ct gold setting.
This is also where rarer coloured stones, fine unheated sapphires, Colombian-origin emeralds, or larger lab-grown diamonds of 1.5 to 2.5 carats become realistic, alongside more elaborate design work: hand engraving, unusual gallery details, or bespoke hallmarked commissions involving multiple stones. There is no meaningful ceiling above this band; £15,000 to £30,000-plus commissions exist for larger or rarer stones, but the jump from £10,000 to that range is driven almost entirely by stone rarity and size, not by setting labour.
How this lines up with what people actually spend
It's worth being honest about how much UK survey data on engagement ring spend disagrees with itself. Some 2025-2026 sources put the average as high as £5,750, others put the median closer to £1,500, with a further cluster of surveys landing between £2,000 and £3,500. This isn't inconsistency for its own sake; it reflects real differences in who's being surveyed. Figures drawn from premium jewellers' own sales data will naturally skew higher than figures drawn from a broad consumer survey across all price points, and averages get pulled upward by a smaller number of very high-value purchases in a way that medians don't. The practical takeaway is that there is no single "normal" figure to aim for, and the £1,500 to £5,000 range covers the overwhelming majority of genuine UK bespoke commissions regardless of which survey you trust most.
What actually pushes a commission from one band to the next
A handful of specific decisions matter more than anything else:
- Carat weight. Diamond price doesn't scale linearly with size; cost accelerates at recognised carat thresholds such as 0.5, 1 and 2 carats, because demand and rarity both jump at these points. Crossing a threshold, even by a small fraction of a carat, can push a commission into the next band.
- Mined versus lab-grown. As of 2026, lab-grown diamonds typically cost 50 to 80% less than a mined stone of equivalent size and grade. This single choice does more to move a commission between bands than any other variable.
- Metal choice. Platinum generally costs more than 18ct white or yellow gold for an equivalent setting, both because the raw metal is more expensive and because it's denser and harder to work, adding bench time.
- Setting complexity. Pavé, halo surrounds, hand engraving and unusual band constructions each add hours of skilled labour. A simple solitaire and an elaborately detailed setting in the same metal can differ by £500 to £1,500 in labour alone.
- Stone shape. Fancy shapes, such as emerald, pear or marquise cuts, generally cost less per carat than round brilliants of equivalent quality, because round cuts lose more rough material in the cutting process and are in higher demand.
What tends to be underestimated at every band
A few costs get overlooked regardless of budget level. Insurance valuation, needed to insure a ring properly rather than relying on generic home contents cover, typically costs £30 to £80 as a one-off documentation fee, and is worth building into the plan rather than treating as an afterthought once the ring is collected. Resizing, if your finger size changes or the initial fit needs adjusting after wear, usually costs £30 to £80 for a straightforward alteration, more if the setting is intricate. And VAT: UK jewellers should quote VAT-inclusive prices, but it's always worth confirming explicitly, since a figure that turns out to exclude VAT is effectively 20% higher than the number you budgeted against.
The bottom line
There is no single "cost of a bespoke ring" in the UK; there's a scale that runs from around £1,500 to well over £10,000, and where a commission lands depends far more on the stone than on the fact that it's bespoke at all. The most useful thing a buyer can do is decide the budget first, be specific about it with the jeweller, and let the stone-versus-setting trade-off be made deliberately rather than discovered at the final quote.