VG Polish

What VG Polish Means for Buyers

Polish grade measures how smooth each facet's surface is after cutting. At Excellent, no polish lines are visible even at 10× magnification. Polish becomes visible to the naked eye only at Good or worse, and even then, typically only in strong directional lighting. It's one of the least consequential of the grading dimensions.

Right now we're tracking 3,313,901 active VG polish listings across our retailer network. The typical natural VG diamond trades around €1,766/ct while the lab-grown equivalent sits at €440/ct. Roughly a 75% gap that reflects the broader natural-vs-lab pricing gap, not a quality difference at this grade.

VG commands a modest 13.2% premium over the neighboring GD grade. For buyers who prioritise face-up appearance over spec sheets, GD delivers almost all of the visual quality for noticeably less. Pay for VG only if you care about the grade showing on the cert.

VG shows up most often in ROUND. About 734,446 listings at this moment. Followed by OVAL. Most of the supply clusters around the under-0.5ct carat range, where demand is strongest and retailers keep the deepest inventory. If you're shopping an unusual shape or carat, expect thinner selection.

Polish is cheap at the top grades, so there's rarely a reason to buy less than Very Good or Excellent. The premium is typically just a few percent over Good. On a GIA-graded stone we'd expect Excellent polish by default. Don't pay extra premiums for it, but don't accept Good or lower either.