1.51ct I SI1 Cushion Natural Diamond

About this 1.51ct natural cushion diamond

This 1.51ct natural cushion sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1543770021. Listed at 21 retailers as of October 31, 2026, with prices from $5,193 to $10,210, a $5,017 spread on the same certified stone. MOH London lists it at $10,210. 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.