0.42ct G SI1 Round Lab Grown Diamond

About this 0.42ct lab-grown round diamond

This 0.42ct lab-grown round sits in the sub-half-carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG455034095 or 455034095. Listed at 10 retailers as of October 29, 2026, with prices from $231 to $1,154, a $923 spread on the same certified stone. MOH London lists it at $1,154. 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.