Lab-grown diamonds £2,000 and over

Every loose diamond here has an independent IGI or GIA report and Excellent or Very Good polish and symmetry; nearly all are D–F colour and VS2 clarity or better, which is clean to the eye. The top grades cost no more in lab-grown, so the choices worth making are size, shape and proportion.

• Juvetti pickOur shortlist for each shape and size: Top light performance plus Looks bigger or Most for your money, with an IGI or GIA report and a 360° video. Re-checked the moment a stone changes.
• Top light performanceProportions judged against the ideal range for its shape: length-to-width ratio, depth and table, with Excellent polish and symmetry. Rounds must also be Ideal cut or hearts and arrows.
• Looks biggerMeasured face-up (length × width) against its carat weight: larger across the top than most stones of the same shape and size.
• Most for your moneyPrice per carat compared with stones of the same shape and size: this one sits in the cheapest quarter.

More ways in: Juvetti picks · Matched pairs for earrings · Pink, blue and yellow diamonds · Vintage, rose and unusual cuts