How Much Does a Lab-Grown Diamond Tennis Bracelet Cost in the UK? (2026 Guide)
You fasten it, look at your wrist and want to know it was worth choosing well.
In the UK, a solid-gold lab-grown diamond tennis or line bracelet from The Lab Jewellers costs from £2,695 to £11,850. The starting point is Capella, with 4.40ct total in 14kt gold at £2,695, while Polaris reaches 24.28ct total in 18kt gold at £11,850. Within the same design, 18kt gold costs more than 14kt gold.
2026 lab-grown diamond tennis bracelet prices
| Bracelet | Shape | Total lab-grown diamond weight | 14kt price | 18kt price |
|---|---|---|---|---|
| Capella | Cushion | 4.40ct | £2,695 | £3,595 |
| Alcyone | Round | 5.17ct | £2,995 | £3,995 |
| Larissa | Round | 6.37ct | £3,495 | £4,695 |
| Nashira | Round | 7.42ct | £3,895 | £5,250 |
| Selene | Round | 9.30ct | £4,695 | £6,295 |
| Vega | Classic round | 13.19ct | £5,495 | £6,950 |
| Atlas | Round | 24.65ct | £7,850 | £9,650 |
These prices show why there is no single answer for every bracelet. The design, total lab-grown diamond weight and gold choice all work together. At the top of our wider range, the 18kt Polaris has 24.28ct total of princess-cut lab-grown diamonds and costs £11,850.
What drives the price?
Total lab-grown diamond carat weight
Total carat weight is the combined weight of all the lab-grown diamonds in the bracelet. As that total rises, so does the amount of lab-grown diamond material set around the wrist. Compare Capella at 4.40ct total with Atlas at 24.65ct total and the difference in price becomes clear.
Number and size of the stones
A tennis bracelet is not one large stone. It is a carefully connected line of many smaller lab-grown diamonds, and both their number and their individual size affect the build. Alcyone, for example, uses 47 round lab-grown diamonds measuring 3.00mm each.
Lab-grown diamond shape
Shape changes the design as well as the price. Cushion, princess, emerald, marquise and pear lab-grown diamonds are priced differently, so two bracelets with a similar total carat weight can still cost different amounts. Choose the outline you want to see every time you look at your wrist, rather than treating shape as a small technical detail.
14kt or 18kt gold
Every bracelet is made in solid 14kt or 18kt white, yellow or rose gold. For the same bracelet, 18kt costs more than 14kt. If you are deciding between them, our 14kt or 18kt gold guide explains the choice in plain English.
Setting style
The setting determines how each lab-grown diamond is held and how the linked sections move around the wrist. Alcyone places each round lab-grown diamond inside a square box frame with four claws. Those frames are linked to follow the wrist, then finished with a secure box clasp and figure-eight safety catch.
How to choose the right bracelet
Start with the look you want
Begin with the part you will notice every day: the shape and the overall presence on the wrist. A lower total carat weight gives you one kind of look; a higher total carat weight gives you another. The right answer is the one that feels like you, not simply the largest number in the table.
Choose the gold after the design
Once you have chosen the bracelet, compare its 14kt and 18kt prices side by side. You can then decide whether you would rather put more of your budget into total lab-grown diamond weight or choose the higher-priced 18kt version. White, yellow and rose gold let you match the jewellery you already wear.
Get the length agreed before production
Fit matters because the linked frames are designed to follow the wrist. Alcyone is made to order at about 6.4 inches, and you can ask for a different length in the order notes. We confirm the requested length before production begins, so this decision is settled before your bracelet is made.
Understand the quality and paperwork
Every lab-grown diamond we set is D–F colour and VS1 clarity or better. Individual IGI grading reports come with pieces whose centre stone weighs 1.00ct or more. A tennis bracelet is made from many smaller lab-grown diamonds rather than one centre stone, so it is built to our D–F, VS1+ standard and the stones are not individually certified.
Know what is included
Your bracelet is made to order in around four weeks and is UK hallmarked where required. Free tracked and signed-for UK delivery and a 12-month guarantee are included. That leaves the important choices with you: the design, total carat weight, gold and length.
Frequently asked questions
How much is a lab-grown diamond tennis bracelet in the UK?
At The Lab Jewellers, solid-gold lab-grown diamond tennis and line bracelets start at £2,695 for the 14kt Capella with 4.40ct total and reach £11,850 for the 18kt Polaris with 24.28ct total. The final price depends on total carat weight, stone number and size, shape, gold and setting style.
Is 18kt more expensive than 14kt for the same bracelet?
Yes. The 18kt version costs more than the 14kt version of the same bracelet; for example, Alcyone is £2,995 in 14kt and £3,995 in 18kt.
Does a lab-grown diamond tennis bracelet come with IGI reports?
The smaller lab-grown diamonds in a tennis bracelet are not individually certified. Every one is set to our D–F colour, VS1 clarity or better standard, while individual IGI grading reports are supplied for pieces whose centre stone weighs 1.00ct or more.
How long does a made-to-order tennis bracelet take?
Our lab-grown diamond tennis and line bracelets are made to order in around four weeks. UK delivery is free, tracked and signed for.
Can I request a different bracelet length?
Yes. Alcyone is made at about 6.4 inches, but you can request a different length in the order notes and we will confirm it before production begins.
Choose the bracelet you will keep reaching for
A tennis bracelet earns its place by feeling right every time you fasten it. Compare the shapes, total lab-grown diamond weights and gold options in our lab-grown diamond tennis bracelet collection, then choose the design that looks like it was always meant to be yours.