0.51ct I SI2 Marquise Natural Diamond
VG • I/SI2 • GIA 6392602089
Certificate GIA 6392602089
Diamond specifications and retailer prices
About this 0.51ct natural marquise diamond
This 0.51ct natural marquise sits in the half to three-quarter carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6392602089. Listed at 5 retailers as of November 4, 2026, with prices from $990 to $1,853, a $863 spread on the same certified stone. MOH London lists it at $1,853. 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.
The 4Cs
Specifications
Caratlytics Score
How it works →5 retailers
Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.
Similar diamonds
- 0.51ct MarquiseI/SI2from $619across 22 retailersAs of November 4, 2026
- 0.51ct MarquiseI/SI2from $486across 15 retailersAs of November 6, 2026
- 0.51ct MarquiseI/SI2from $403across 12 retailersAs of November 5, 2026
- 0.51ct MarquiseI/SI2from $543across 6 retailersAs of November 3, 2026
- 0.51ct MarquiseI/SI2from $763across 4 retailersAs of November 4, 2026
- 0.51ct MarquiseI/SI2from $410across 4 retailersAs of November 6, 2026
- 0.51ct MarquiseI/SI2from $462across 4 retailersAs of November 4, 2026
- 0.51ct MarquiseI/SI2from $350across 3 retailersAs of November 6, 2026