1.51ct J SI1 Marquise Natural Diamond
VG • J/SI1 • IGI 809692331
Shape and cutting style on the report: Marquise brilliant
Certificate IGI 809692331
Diamond specifications and retailer prices
About this 1.51ct natural marquise diamond
This 1.51ct natural marquise sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 809692331. Listed at 8 retailers as of November 2, 2026, with a 74% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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 →8 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
- 1.51ct MarquiseJ/SI1from $11,882across 23 retailersAs of November 6, 2026
- 1.51ct MarquiseJ/SI1from $9,351across 22 retailersAs of November 6, 2026
- 1.51ct MarquiseJ/SI1from $11,166across 15 retailersAs of November 4, 2026
- 1.51ct MarquiseJ/SI1from $11,046across 13 retailersAs of November 5, 2026
- 1.51ct MarquiseJ/SI1from $5,400across 12 retailersAs of November 6, 2026
- 1.51ct MarquiseJ/SI1from $10,953across 9 retailersAs of November 6, 2026
- 1.51ct MarquiseJ/SI1from $10,425across 9 retailersAs of November 6, 2026
- 1.51ct MarquiseJ/SI1from $10,499across 8 retailersAs of November 3, 2026