Heart|Natural|GIA

0.51ct E SI1 Heart Natural Diamond

ID • E/SI1 • GIA 5536992227

Certificate GIA 5536992227

Diamond specifications and retailer prices

From £328 GBP
As of November 6, 2026
Save £189 GBP (37%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £1,204 GBP at NZ Jewellers · As of September 25, 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 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 5536992227. Listed at 14 retailers as of November 6, 2026, with a 58% 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

0.51
Carat
E
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Pavilion angle42.9°
OriginNatural
Grading LabGIA
CertificateGIA 5536992227
Dimensions4.62 × 5.49 × 3.50 mm
L/W Ratio1.19
Top View
4.62 mm5.49 mm0.51 ctE / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5536992227
Side View
Table 59.0%CrownGirdle: MED-THKPavilion 42.9°Culet: NoneDepth 63.8%

Caratlytics Score

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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: £418 GBP|Low: £241 GBP|High: £830 GBP|Avg: £456 GBP|+2.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 6, 2026
Retailer 15£328 GBP
Retailer 13£329 GBP
Retailer 2£344 GBP
Retailer 10£353 GBP
Retailer 12£377 GBP
Retailer 14£380 GBP
Retailer 8£391 GBP
Retailer 1£418 GBP
Retailer 7£426 GBP
Retailer 9£448 GBP
Retailer 5£508 GBP
Retailer 11£517 GBP
Retailer 4£551 GBP
Retailer 6£552 GBP
Retailer 3£830 GBP

39 data points across 15 retailers

14 retailers£328 GBP to £517 GBP

A
Cheapest Retailer
-
£328 GBP
Final sale: no returns
A
Retailer 2
-
£329 GBP
View
A
Retailer 3
-
£344 GBP
View
A
Retailer 4
-
£353 GBP
View
A
Retailer 5
-
£377 GBP
View
Retailer 6
-
£380 GBP
View
Price last confirmed 19 days ago
A
Retailer 7
-
£391 GBP
View
A
Retailer 8
-
£418 GBP
View
A
Retailer 9
-
£448 GBP
View
B+
Retailer 10
-
£517 GBP
View
Retailer 11
-
£551 GBP
View
Price last confirmed 30 days ago
Retailer 12
-
£552 GBP
View
Price last confirmed 34 days ago
Retailer 13
-
£830 GBP
View
Price last confirmed 29 days ago
Most Expensive
NZ Jewellers
0e3a3b94-9eb8-4298-8d6f-681678d05d41 · Sep 25
£1,204 GBP
$1,611 USD
View
Price last confirmed 42 days ago
13 more retailers have this diamond
Prices start from £328 GBPSave up to £189 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
£328 GBP