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Oval|Natural|GIA

0.51ct D SI2 Oval Natural Diamond

EX • D/SI2 • GIA 2564205635

Certificate GIA 2564205635

Diamond specifications and retailer prices

From £382 GBP
As of November 6, 2026
Save £578 GBP (60%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £1,457 GBP at NZ Jewellers · As of September 15, 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 D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2564205635. Listed at 17 retailers as of November 2, 2026, with a 151% 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
D
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2564205635
Dimensions6.03 × 4.49 × 2.81 mm
L/W Ratio1.34
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather
Top View
6.03 mm4.49 mm0.51 ctD / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 2564205635
Side View
Table 64.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 62.7%

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 6
Current: £513 GBP|Low: £368 GBP|High: £1,058 GBP|Avg: £619 GBP|-7.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 5£382 GBP
Retailer 1£513 GBP
Retailer 3£518 GBP
Retailer 2£613 GBP
Retailer 4£638 GBP
Retailer 6£960 GBP

45 data points across 6 retailers

17 retailers£382 GBP to £960 GBP

A
Cheapest Retailer
-
£382 GBP
Final sale: no returns
Retailer 2
-
£426 GBP
View
Price last confirmed 19 days ago
Retailer 3
-
£458 GBP
View
Price last confirmed 45 days ago
Retailer 4
-
£459 GBP
View
Price last confirmed 21 days ago
Retailer 5
-
£459 GBP
View
Price last confirmed 22 days ago
Retailer 6
-
£465 GBP
View
Price last confirmed 53 days ago
Retailer 7
-
£492 GBP
View
Price last confirmed 19 days ago
A
Retailer 8
-
£513 GBP
View
A
Retailer 9
-
£518 GBP
View
Retailer 10
-
£529 GBP
View
Price last confirmed 45 days ago
Retailer 11
-
£536 GBP
View
Price last confirmed 53 days ago
B+
Retailer 12
-
£613 GBP
View
B+
Retailer 13
-
£638 GBP
View
B
Retailer 14
-
£960 GBP
View
Retailer 15
-
£1,336 GBP
View
Price last confirmed 20 days ago
Retailer 16
-
£1,437 GBP
View
Price last confirmed 46 days ago
Most Expensive
NZ Jewellers
da349af0-584a-489a-bff0-25c08fe352aa · Sep 15
£1,457 GBP
$1,950 USD
View
Price last confirmed 52 days ago
16 more retailers have this diamond
Prices start from £382 GBPSave up to £578 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
£382 GBP