0.30ct H SI1 Cushion Natural Diamond

About this 0.3ct natural cushion diamond

This 0.3ct natural cushion sits in the sub-half-carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1555421216. Listed at 11 retailers as of October 31, 2026, with prices from $237 to $770, a $532 spread on the same certified stone. MOH London lists it at $770. 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.