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Oval|Natural|GIA

0.51ct H SI1 Oval Natural Diamond

EX • H/SI1 • GIA 2568589589

Certificate GIA 2568589589

Diamond specifications and retailer prices

From £303 GBP
As of November 6, 2026
Save £1,051 GBP (78%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £1,354 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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2568589589. Listed at 11 retailers as of November 5, 2026, with prices from £303 to £1,354, a £1,051 spread on the same certified stone. NZ Jewellers lists it at £1,354. 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2568589589
Dimensions6.31 × 4.33 × 2.78 mm
L/W Ratio1.46
Girdle conditionThick
Top View
6.31 mm4.33 mm0.51 ctH / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2568589589
Side View
Table 61.0%CrownGirdle: MediumPavilionCulet: NoneDepth 64.2%

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: £1,354 GBP|Low: £303 GBP|High: £1,354 GBP|Avg: £578 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 10£303 GBP
Retailer 2£321 GBP
Retailer 6£489 GBP
Retailer 4£524 GBP
Retailer 3£527 GBP
Retailer 8£530 GBP
Retailer 9£531 GBP
Retailer 7£640 GBP
Retailer 5£666 GBP
NZ Jewellers£1,354 GBP

10 data points across 10 retailers

11 retailers£303 GBP to £1,354 GBP

A
Cheapest Retailer
-
£303 GBP
Final sale: no returns
A
Retailer 2
-
£321 GBP
View
A
Retailer 3
-
£425 GBP
View
B+
Retailer 4
-
£489 GBP
View
B+
Retailer 5
-
£524 GBP
View
B+
Retailer 6
-
£527 GBP
View
B+
Retailer 7
-
£530 GBP
View
B+
Retailer 8
-
£531 GBP
View
B+
Retailer 9
-
£640 GBP
View
B
Retailer 10
-
£666 GBP
View
Most Expensive
B
NZ Jewellers
48c9bb09-83af-4f02-ae8f-d0c082692294 · Nov 5
£1,354 GBP
$1,812 USD
View
10 more retailers have this diamond
Prices start from £303 GBPSave up to £1,051 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
£303 GBP