0.99ct E SI1 Round Lab Grown Diamond

About this 0.99ct lab-grown round diamond

This 0.99ct lab-grown round sits in the just-under-one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG619440857 or 619440857. Listed at 16 retailers as of October 29, 2026, with prices from £223 to £613, a £390 spread on the same certified stone. MOH London lists it at £613. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.