1.51ct H SI1 Cushion Lab Grown Diamond

About this 1.51ct lab-grown cushion diamond

This 1.51ct lab-grown cushion sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG526259531 or 526259531. Listed at 9 retailers as of October 30, 2026, with prices from $307 to $1,361, a $1,054 spread on the same certified stone. MOH London lists it at $1,361. 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.