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Oval|Natural|GIA

0.51ct H SI2 Oval Natural Diamond

EX • H/SI2 • GIA 2567308159

Certificate GIA 2567308159

Diamond specifications and retailer prices

From £288 GBP
As of November 1, 2026
Save £936 GBP (76%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £1,224 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 0.51ct natural oval diamond

This 0.51ct natural oval sits in the half to three-quarter carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2567308159. Listed at 14 retailers as of November 1, 2026, with prices from £288 to £1,224, a £936 spread on the same certified stone. NZ Jewellers lists it at £1,224. 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
H
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2567308159
Dimensions6.35 × 4.46 × 2.85 mm
L/W Ratio1.42
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal
Top View
6.35 mm4.46 mm0.51 ctH / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2567308159
Side View
Table 60.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 64.0%

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 1
Current: £1,224 GBP|Low: £287 GBP|High: £1,224 GBP|Avg: £522 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 7£288 GBP
Retailer 3£359 GBP
Retailer 10£390 GBP
Retailer 12£400 GBP
Retailer 8£421 GBP
Retailer 9£421 GBP
Retailer 11£451 GBP
Retailer 4£471 GBP
Retailer 5£484 GBP
Retailer 2£579 GBP
Retailer 6£901 GBP
NZ Jewellers£1,224 GBP

39 data points across 12 retailers

14 retailers£288 GBP to £1,224 GBP

A
Cheapest Retailer
-
£288 GBP
A
Retailer 2
-
£318 GBP
View
A
Retailer 3
-
£359 GBP
View
Final sale: no returns
A
Retailer 4
-
£390 GBP
View
A
Retailer 5
-
£400 GBP
View
A
Retailer 6
-
£421 GBP
View
Retailer 7
-
£421 GBP
View
Price last confirmed 8 days ago
B+
Retailer 8
-
£451 GBP
View
B+
Retailer 9
-
£484 GBP
View
B+
Retailer 10
-
£495 GBP
View
B+
Retailer 11
-
£524 GBP
View
B+
Retailer 12
-
£579 GBP
View
B
Retailer 13
-
£901 GBP
View
Most Expensive
B
NZ Jewellers
d4aaebf6-6ba7-45ed-bc08-bb071ebcd627 · Nov 5
£1,224 GBP
$1,638 USD
View
13 more retailers have this diamond
Prices start from £288 GBPSave up to £936 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 Oval
£288 GBP