1.21ct E SI1 Radiant Natural Diamond
ID • E/SI1 • GIA 6551135368
Certificate GIA 6551135368
Diamond specifications and retailer prices
About this 1.21ct natural radiant diamond
This 1.21ct natural radiant sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6551135368. Listed at 11 retailers as of November 2, 2026, with a 83% 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 →11 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
- 1.21ct RadiantE/SI1from $6,745across 25 retailersAs of November 6, 2026
- 1.21ct RadiantE/SI1from $5,241across 24 retailersAs of November 6, 2026
- 1.21ct RadiantE/SI1from $6,913across 22 retailersAs of November 5, 2026
- 1.21ct RadiantE/SI1from $5,079across 21 retailersAs of November 6, 2026
- 1.21ct RadiantE/SI1from $6,946across 14 retailersAs of November 6, 2026
- 1.21ct RadiantE/SI1from $8,085across 13 retailersAs of November 4, 2026
- 1.21ct RadiantE/SI1from $4,774across 10 retailersAs of November 5, 2026
- 1.21ct RadiantE/SI1from $6,723across 9 retailersAs of November 6, 2026