Heart|Natural|GIA

0.51ct D SI1 Heart Natural Diamond

VG • D/SI1 • GIA 2517450428

Certificate GIA 2517450428

Diamond specifications and retailer prices

From £403 GBP
As of November 6, 2026
Save £966 GBP (71%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £1,369 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 0.51ct natural heart diamond

This 0.51ct natural heart sits in the half to three-quarter carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2517450428. Listed at 11 retailers as of November 5, 2026, with prices from £403 to £1,369, a £966 spread on the same certified stone. NZ Jewellers lists it at £1,369. 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

0.51
Carat
D
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle36°
Pavilion angle43.5°
OriginNatural
Grading LabGIA
CertificateGIA 2517450428
Dimensions5.37 × 5.05 × 3.24 mm
L/W Ratio1.06
Top View
5.37 mm5.05 mm0.51 ctD / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2517450428
Side View
Table 56.0%Crown 36°Girdle: MED-VTKPavilion 43.5°Culet: NoneDepth 60.4%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: £1,369 GBP|Low: £364 GBP|High: £1,369 GBP|Avg: £611 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 12£403 GBP
Retailer 11£436 GBP
Retailer 9£470 GBP
Retailer 10£470 GBP
Retailer 4£477 GBP
Retailer 7£504 GBP
Retailer 8£504 GBP
Retailer 3£524 GBP
Retailer 2£642 GBP
Retailer 5£673 GBP
Retailer 6£1,006 GBP
NZ Jewellers£1,369 GBP

42 data points across 12 retailers

11 retailers£403 GBP to £1,369 GBP

A
Cheapest Retailer
-
£403 GBP
Final sale: no returns
A
Retailer 2
-
£436 GBP
View
Retailer 3
-
£470 GBP
View
Price last confirmed 8 days ago
B+
Retailer 4
-
£470 GBP
View
B+
Retailer 5
-
£504 GBP
View
B+
Retailer 6
-
£504 GBP
View
Retailer 7
-
£524 GBP
View
Price last confirmed 10 days ago
B
Retailer 8
-
£642 GBP
View
B+
Retailer 9
-
£673 GBP
View
B
Retailer 10
-
£1,006 GBP
View
Most Expensive
B
NZ Jewellers
f2b20deb-afc6-441f-aba4-4c8e985227b0 · Nov 5
£1,369 GBP
$1,832 USD
View
10 more retailers have this diamond
Prices start from £403 GBPSave up to £966 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
£403 GBP