CaratHunter
Plans
Heart|Natural|GIA

0.51ct F SI1 Heart Natural Diamond

EX • F/SI1 • GIA 7526042723

Certificate GIA 7526042723

Diamond specifications and retailer prices

From £293 GBP
As of November 6, 2026
Save £93 GBP (24%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £386 GBP at Blue Nile · As of November 5, 2026
View at Blue Nile

About this 0.51ct natural heart diamond

This 0.51ct natural heart sits in the half to three-quarter carat band, graded F 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 7526042723. Listed at 4 retailers as of November 5, 2026, with prices from £293 to £386, a £93 spread on the same certified stone. Blue Nile lists it at £386. 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

0.51
Carat
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7526042723
Dimensions4.91 × 5.50 × 3.28 mm
L/W Ratio1.12
Culet sizeNone
Key to symbols
Cloud, Feather, Crystal
Top View
4.91 mm5.50 mm0.51 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 7526042723
Side View
Table 59.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 59.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £386 GBP|Low: £261 GBP|High: £436 GBP|Avg: £345 GBP|-11.3%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
November 5, 2026
Retailer 3£293 GBP
Retailer 4£316 GBP
Retailer 2£360 GBP
Blue Nile£386 GBP

40 data points across 4 retailers

4 retailers£293 GBP to £386 GBP

A
Cheapest Retailer
-
£293 GBP
Final sale: no returns
A
Retailer 2
-
£316 GBP
View
A
Retailer 3
-
£360 GBP
View
Most Expensive
B+
Blue Nile
24869372 · Nov 5
£386 GBP
$517 USD
View
3 more retailers have this diamond
Prices start from £293 GBPSave up to £93 GBP

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.

A
0.51ct Heart
£293 GBP