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Heart|Natural|GIA

0.51ct E SI1 Heart Natural Diamond

ID • E/SI1 • GIA 1518624145

Certificate GIA 1518624145

Diamond specifications and retailer prices

From £424 GBP
As of November 6, 2026
Save £1,016 GBP (71%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £1,440 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 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 1518624145. Listed at 15 retailers as of November 5, 2026, with prices from £424 to £1,440, a £1,016 spread on the same certified stone. NZ Jewellers lists it at £1,440. 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
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 1518624145
Dimensions4.64 × 5.47 × 3.24 mm
L/W Ratio1.18
Girdle conditionFaceted
Key to symbols
Twinning Wisp, Crystal
Top View
4.64 mm5.47 mm0.51 ctE / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 1518624145
Side View
Table 59.0%CrownGirdle: STK-EXTPavilionCulet: NoneDepth 59.2%

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: £1,440 GBP|Low: £424 GBP|High: £1,440 GBP|Avg: £668 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
Retailer 13
November 6, 2026
Retailer 13£424 GBP
Retailer 3£459 GBP
Retailer 10£495 GBP
Retailer 12£495 GBP
Retailer 4£530 GBP
Retailer 6£559 GBP
Retailer 2£560 GBP
Retailer 9£575 GBP
Retailer 11£601 GBP
Retailer 5£690 GBP
Retailer 7£709 GBP
Retailer 8£1,059 GBP
NZ Jewellers£1,440 GBP

38 data points across 13 retailers

15 retailers£424 GBP to £1,440 GBP

A
Cheapest Retailer
-
£424 GBP
Final sale: no returns
A
Retailer 2
-
£435 GBP
View
A
Retailer 3
-
£459 GBP
View
B+
Retailer 4
-
£495 GBP
View
Retailer 5
-
£495 GBP
View
Price last confirmed 8 days ago
B+
Retailer 6
-
£530 GBP
View
B+
Retailer 7
-
£559 GBP
View
B+
Retailer 8
-
£560 GBP
View
B+
Retailer 9
-
£575 GBP
View
B+
Retailer 10
-
£601 GBP
View
B
Retailer 11
-
£634 GBP
View
Retailer 12
-
£690 GBP
View
Price last confirmed 33 days ago
B+
Retailer 13
-
£709 GBP
View
B
Retailer 14
-
£1,059 GBP
View
Most Expensive
B
NZ Jewellers
1f9c128c-3fb7-4bd0-affb-343042fe8807 · Nov 5
£1,440 GBP
$1,928 USD
View
14 more retailers have this diamond
Prices start from £424 GBPSave up to £1,016 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
£424 GBP