A lab-grown diamond is a diamond grown using technology rather than formed underground. Its price depends on the individual stone: carat weight, cut, colour, clarity, grading report and supplier offer all matter. Compare the specifications before comparing prices.
How much does a lab-grown diamond cost?
One example displayed on our website when checked on 26 October 2026 was a 0.52ct round lab-grown diamond, I colour, VS1 clarity, Very Good cut, with an IGI report, listed at £465 including VAT. This is a dated website example for the loose stone, not a current availability confirmation or a quotation for a finished ring. Follow the listing for the displayed price, and ask us to reconfirm price and availability before committing.
A diamond price is not a complete ring price.
The setting, metal, any side stones and the work involved in making the ring affect the total. As a budgeting illustration only, a £2,000 total budget with £1,200 allocated to the setting leaves £800 for the centre stone. Those allocations are not a product quotation or confirmation that a particular setting fits a particular diamond.
Compare diamonds in the ring builder and select Lab Grown, or book a consultation to discuss a complete-ring budget. You can also explore our made-to-order designs.
Compare like with like. Keep the shape, carat weight, colour, clarity and cut as close as possible when comparing stones. Check the grading laboratory, measurements and any growth or treatment information on the report. Two diamonds of the same weight can differ in appearance and price.
Understand the price difference. Lab-grown diamonds often offer a larger stone for a given budget than natural diamonds, but there is no single discount percentage that applies to every pair. Natural origin, scarcity, the individual specification and changing supplier prices affect the comparison. Our Four Cs guide explains the main quality factors.
Read the report and look at the stone. A grading report records characteristics; it does not replace judging the diamond’s appearance. Review the certificate, photographs and video where available, and ask us about anything that is unclear. Our certificate-checking guide explains how to verify report details.
Sourcing claims need evidence. Lab-grown production uses energy, and its environmental impact depends on the production method, energy source and supply chain. Natural diamonds also have sourcing considerations. Neither origin alone establishes that a particular stone is sustainable or ethically sourced; ask for evidence relating to the stone and supplier.
Buy for the jewellery you want to wear. Do not assume the purchase price will be recovered on resale. Before choosing, ask about the full ring price, availability, suitable settings and aftercare. For a natural-diamond starting point, see our natural diamond buying guide.
