0.30ct G SI2 Marquise Natural Diamond

About this 0.3ct natural marquise diamond

This 0.3ct natural marquise sits in the sub-half-carat band, graded G colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI 790682826. Listed at 13 retailers as of November 1, 2026, with prices from $279 to $644, a $365 spread on the same certified stone. MOH London lists it at $644. 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.