Round Cut Lab-Grown Diamonds

Browse more than 2,000 loose round brilliant lab-grown diamonds, from under half a carat to over 6 carats, in colourless D to J grades and fancy colours. Many are graded Ideal cut with hearts and arrows symmetry, and most come with an independent IGI or GIA grading report.

Why choose a round brilliant diamond?

The round brilliant is cut with 58 facets engineered to maximise light return, making it the most sparkling and most popular diamond shape, and the classic choice for solitaire engagement rings and stud earrings.

How to choose a round lab-grown diamond

Cut grade. Cut matters most for round diamonds. Look for Ideal or Excellent cut, polish and symmetry for maximum brilliance; stones marked H&A (hearts and arrows) show a precise optical pattern.

Colour and clarity. D to F colour is the whitest; G and H look white once set and offer excellent value. VS1 and VS2 clarity are eye-clean.

Browse all loose lab-grown diamonds, or compare with oval and cushion cut diamonds.