0.40ct J SI1 Cushion Natural Diamond

About this 0.4ct natural cushion diamond

This 0.4ct natural cushion sits in the sub-half-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6555708682. Listed at 8 retailers as of October 31, 2026, with prices from $257 to $836, a $578 spread on the same certified stone. MOH London lists it at $836. 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.