0.43ct D SI1 Marquise Lab Grown Diamond

About this 0.43ct lab-grown marquise diamond

This 0.43ct lab-grown marquise sits in the sub-half-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG705528086 or 705528086. Listed at 12 retailers as of November 1, 2026, with prices from £119 to £627, a £507 spread on the same certified stone. MOH London lists it at £627. 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.