Education

Bespoke Lab Grown Diamond Engagement Rings: UK Guide

At Luma every engagement ring is made to order, so bespoke is not an upgrade you pay extra for, it is simply how we work. You choose the setting, the metal, the diamond shape and the stone itself, and we make the ring in our Hatton Garden workshop and hallmark it in the UK. Settings start at £670 and a finished ring starts from around £820, because we price your certified lab grown diamond separately when you choose it. A standard commission usually takes four to six weeks from confirmation, and up to two months for more involved pieces, or two weeks with Priority at £499. Nothing is made in advance and nothing sits in a case waiting for a buyer, which is why the same ring costs less here than it would through a retailer holding stock.

Starting points to build from

Each price is for the setting. Every design can be built in your choice of metal and diamond shape, and we price your certified stone separately when you choose it. Build one in the Design Studio or book a consultation.

What bespoke actually means, and what it usually means

Bespoke is a word the jewellery trade uses loosely, and it is worth knowing which version you are being offered.

At one end, a retailer sells you a finished ring from a case and calls resizing it bespoke. In the middle, and this is where most of the industry sits, you choose an existing design and specify the metal, the diamond shape and the stone. At the far end, someone draws a ring that has never existed, models it, and casts it from scratch.

Luma works at the middle and the far end, and the middle is our standard. Every design in the collection is made when you order it, in the metal and shape you choose, around the diamond you pick. If you want something the collection does not cover, we design it with you from a consultation. What we do not do is hold finished stock and describe adjusting it as a commission.

How it works

There are four steps, and you see the price move at each one.

Timeline. Standard is included and usually takes four to six weeks from confirmation, and up to two months for more involved pieces. Priority takes two weeks and costs £499. We ask this first because it is the constraint people forget until it is too late, and a proposal date does not move.

Setting. Choose the design, the metal and the diamond shape. Every setting we make can be built around a round, oval, pear, emerald, princess, cushion, radiant, Asscher, marquise or heart centre, so the shape is your decision rather than the design's.

Diamond. You choose your certified lab grown stone and we price it live at that moment, based on what is available. This is the step that decides most of the cost, and it is why we do not publish one price for a finished ring.

Order. You approve the diamond certificate before we make anything. Then it goes to the bench in Hatton Garden and comes back hallmarked.

You can do all of this in the Design Studio online, or in person at the workshop where you can compare stones side by side under a loupe. Most people who spend above £1,500 come in for the diamond, because the difference between two stones on the same certificate is obvious in the hand and invisible on a screen.

How long it takes

Usually four to six weeks from the point you confirm, and up to two months for more involved pieces, or two weeks with Priority at £499.

That covers sourcing and certifying the stone, casting the setting in your chosen metal, setting the diamond, finishing and UK hallmarking. Hallmarking is a legal step at the Assay Office and it is not something any jeweller can compress, which is worth knowing when somebody quotes you a few days.

If you are working to a date, tell us at the first conversation rather than at the end. We can almost always make a date if we know about it early, and almost never if we hear about it late. There is more detail in our guide on how long a bespoke engagement ring takes.

What bespoke costs

Less than the ready made equivalent, which surprises people.

A retailer holding finished stock has paid to make rings nobody has bought yet, and that cost sits in the price of the one you do buy. We make yours when you order it, so there is no stock to fund and no shop floor markup between you and the bench.

Settings start at £670 and most sit between £670 and £1,200, with larger designs reaching around £2,400. Your diamond is priced on top when you choose it. In practice most finished bespoke rings land between roughly £820 and £3,000, and the stone rather than the setting is what moves that figure. Our full breakdown is in the lab grown diamond pricing guide.

Common questions

How much does a bespoke lab grown engagement ring cost in the UK?

At Luma settings start at £670 and we price your IGI certified lab grown diamond separately when you choose it, so a finished bespoke ring starts from around £820. Most land between roughly £820 and £3,000 depending on the stone. Because every ring is made to order rather than held as stock, bespoke costs less here than buying a comparable ready made ring from a retailer.

How long does a bespoke engagement ring take to make?

Usually four to six weeks from confirmation as standard, and up to two months for more involved pieces, or two weeks with Priority at £499. That covers sourcing and certifying the diamond, casting the setting, setting the stone, finishing and UK hallmarking at the Assay Office. Tell us your date at the first conversation and we can usually work to it.

Is bespoke more expensive than buying a ready made ring?

No, and usually the opposite. A jeweller holding finished stock has funded rings nobody has bought, and that cost is built into the price of the one you buy. We make each ring when it is ordered, from our own Hatton Garden workshop, so you are paying for your ring rather than for a shop floor.

Can I design a ring that is not in your collection?

Yes. Every design in the collection can be built in your choice of metal and diamond shape, which covers most requests. If you want something the range does not cover, book a consultation and we will design it with you from scratch. Either way it is made on the bench in Hatton Garden.

Start in the Luma Design Studio, see the full range of engagement rings, or book a consultation at our Hatton Garden workshop.

Shop by setting: solitaire, halo and trilogy lab grown engagement rings.

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