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Oval|Natural|GIA

0.51ct F SI2 Oval Natural Diamond

EX • F/SI2 • GIA 6565307176

Certificate GIA 6565307176

Diamond specifications and retailer prices

From £321 GBP
As of November 6, 2026
Save £1,007 GBP (76%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £1,328 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 F 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 6565307176. Listed at 12 retailers as of November 5, 2026, with prices from £321 to £1,328, a £1,007 spread on the same certified stone. NZ Jewellers lists it at £1,328. 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
F
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6565307176
Dimensions6.29 × 4.49 × 2.74 mm
L/W Ratio1.40
Girdle conditionMedium to Thick
Key to symbols
Twinning Wisp
Top View
6.29 mm4.49 mm0.51 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6565307176
Side View
Table 60.0%CrownGirdle: UND-UNDPavilionCulet: NoneDepth 61.0%

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: £321 GBP|Low: £321 GBP|High: £989 GBP|Avg: £537 GBP|-2.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 1£321 GBP
Retailer 8£390 GBP
Retailer 7£456 GBP
Retailer 5£460 GBP
Retailer 2£503 GBP
Retailer 3£518 GBP
Retailer 6£628 GBP
Retailer 4£976 GBP

29 data points across 8 retailers

12 retailers£321 GBP to £1,328 GBP

A
Cheapest Retailer
-
£321 GBP
A
Retailer 2
-
£390 GBP
View
Final sale: no returns
A
Retailer 3
-
£424 GBP
View
A
Retailer 4
-
£456 GBP
View
A
Retailer 5
-
£460 GBP
View
A
Retailer 6
-
£489 GBP
View
A
Retailer 7
-
£503 GBP
View
B+
Retailer 8
-
£518 GBP
View
B+
Retailer 9
-
£521 GBP
View
B+
Retailer 10
-
£628 GBP
View
B
Retailer 11
-
£976 GBP
View
Most Expensive
B
NZ Jewellers
5e00d38b-622c-43f2-9f9e-ecd630ce6715 · Nov 5
£1,328 GBP
$1,777 USD
View
11 more retailers have this diamond
Prices start from £321 GBPSave up to £1,007 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
£321 GBP