0.30ct F SI1 Marquise Natural Diamond

About this 0.3ct natural marquise diamond

This 0.3ct natural marquise sits in the sub-half-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2558840948. Listed at 16 retailers as of November 2, 2026, with prices from $248 to $775, a $527 spread on the same certified stone. MOH London lists it at $775. 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.