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Heart|Natural|GIA

0.51ct G SI2 Heart Natural Diamond

VG • G/SI2 • GIA 2536527442

Certificate GIA 2536527442

Diamond specifications and retailer prices

From £264 GBP
As of November 6, 2026
Save £572 GBP (68%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £1,391 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 G colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2536527442. Listed at 15 retailers as of November 4, 2026, with a 216% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
G
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishGood
SymmetryGood
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 2536527442
Dimensions4.87 × 5.18 × 3.40 mm
L/W Ratio1.06
Top View
4.87 mm5.18 mm0.51 ctG / SI2
OriginNatural
CutVery Good
PolishGood
SymmetryGood
FluorescenceStrong
CertificateGIA 2536527442
Side View
Table 57.0%CrownGirdle: MED-ETKPavilionCulet: NoneDepth 65.7%

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: £1,391 GBP|Low: £264 GBP|High: £1,391 GBP|Avg: £510 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 7, 2026
Retailer 5£264 GBP
Retailer 12£363 GBP
Retailer 7£378 GBP
Retailer 2£391 GBP
Retailer 11£391 GBP
Retailer 3£418 GBP
Retailer 6£431 GBP
Retailer 8£448 GBP
Retailer 4£454 GBP
Retailer 10£491 GBP
Retailer 9£837 GBP
NZ Jewellers£1,391 GBP

29 data points across 12 retailers

15 retailers£264 GBP to £837 GBP

A
Cheapest Retailer
-
£264 GBP
B+
Retailer 2
-
£306 GBP
View
B+
Retailer 3
-
£363 GBP
View
B+
Retailer 4
-
£378 GBP
View
B+
Retailer 5
-
£391 GBP
View
B+
Retailer 6
-
£391 GBP
View
B+
Retailer 7
-
£418 GBP
View
B+
Retailer 8
-
£418 GBP
View
B+
Retailer 9
-
£431 GBP
View
B
Retailer 10
-
£448 GBP
View
B
Retailer 11
-
£454 GBP
View
B
Retailer 12
-
£459 GBP
View
B
Retailer 13
-
£491 GBP
View
C
Retailer 14
-
£837 GBP
View
Most Expensive
NZ Jewellers
688ba965-f74d-433b-ad69-e509baf7cabe · Nov 5
£1,391 GBP
$1,862 USD
View
Price under review
14 more retailers have this diamond
Prices start from £264 GBPSave up to £572 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
£264 GBP