0.51ct H SI1 Heart Natural Diamond
EX • H/SI1 • GIA 6525123597
Certificate GIA 6525123597
Diamond specifications and retailer prices
About this 0.51ct natural heart diamond
This 0.51ct natural heart sits in the half to three-quarter carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6525123597. Listed at 20 retailers as of November 1, 2026, with a 215% 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 →20 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 HeartH/SI1from £296across 13 retailersAs of November 6, 2026
- 0.51ct HeartH/SI1from £468across 5 retailersAs of November 5, 2026
- 0.51ct HeartH/SI1from £289across 4 retailersAs of November 6, 2026
- 0.51ct HeartH/SI1from £298across 4 retailersAs of November 6, 2026
- 0.51ct HeartH/SI1from £296across 4 retailersAs of November 6, 2026
- 0.51ct HeartH/SI1from £296across 4 retailersAs of November 6, 2026
- 0.51ct HeartH/SI1from £298across 4 retailersAs of November 6, 2026
- 0.51ct HeartH/SI1from £283across 4 retailersAs of November 6, 2026