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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1557826045. Listed at 16 retailers as of November 1, 2026, with prices from $289 to $667, a $378 spread on the same certified stone. MOH London lists it at $667. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.