1.51ct I SI1 Round Natural Diamond
EX • I/SI1 • GIA 1558309758
Certificate GIA 1558309758
Diamond specifications and retailer prices
About this 1.51ct natural round diamond
This 1.51ct natural round sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1558309758. Listed at 28 retailers as of November 1, 2026, with a 86% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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.
The 4Cs
Specifications
Caratlytics Score
How it works →28 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 RoundI/SI1from $4,834across 24 retailersAs of October 31, 2026
- 1.51ct RoundI/SI1from $6,015across 19 retailersAs of November 1, 2026
- 1.51ct RoundI/SI1from $5,120across 19 retailersAs of October 31, 2026
- 1.51ct RoundI/SI1from $7,034across 19 retailersAs of November 1, 2026
- 1.51ct RoundI/SI1from $4,255across 18 retailersAs of November 1, 2026
- 1.51ct RoundI/SI1from $4,811across 18 retailersAs of November 1, 2026
- 1.51ct RoundI/SI1from $7,275across 18 retailersAs of October 31, 2026
- 1.51ct RoundI/SI1from $3,355across 18 retailersAs of October 31, 2026