Oval|Natural|GIA

0.51ct F SI2 Oval Natural Diamond

EX • F/SI2 • GIA 6495141284

Certificate GIA 6495141284

Diamond specifications and retailer prices

From £588 GBP
As of November 6, 2026
Save £699 GBP (54%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £1,287 GBP at MOH London · As of November 4, 2026
View at MOH London

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 6495141284. Listed at 18 retailers as of November 4, 2026, with prices from £588 to £1,287, a £699 spread on the same certified stone. MOH London lists it at £1,287. 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
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle34.3°
Pavilion angle39.11°
OriginNatural
Grading LabGIA
CertificateGIA 6495141284
Dimensions6.63 × 4.47 × 2.67 mm
L/W Ratio1.48
Top View
6.63 mm4.47 mm0.51 ctF / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6495141284
Side View
Table 56.0%Crown 34.3°Girdle: STK-VTKPavilion 39.11°Culet: NoneDepth 59.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £1,287 GBP|Low: £588 GBP|High: £1,305 GBP|Avg: £837 GBP|-0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 5£588 GBP
Retailer 6£662 GBP
Retailer 7£698 GBP
Retailer 3£702 GBP
Retailer 2£835 GBP
Retailer 4£989 GBP
MOH London£1,287 GBP

45 data points across 7 retailers

18 retailers£588 GBP to £1,287 GBP

B+
Cheapest Retailer
-
£588 GBP
Final sale: no returns
B+
Retailer 2
-
£625 GBP
View
Retailer 3
-
£637 GBP
View
Price last confirmed 8 days ago
B+
Retailer 4
-
£637 GBP
View
B+
Retailer 5
-
£640 GBP
View
B+
Retailer 6
-
£645 GBP
View
B+
Retailer 7
-
£662 GBP
View
B+
Retailer 8
-
£698 GBP
View
B+
Retailer 9
-
£702 GBP
View
B+
Retailer 10
-
£713 GBP
View
B
Retailer 11
-
£735 GBP
View
B
Retailer 12
-
£755 GBP
View
B
Retailer 13
-
£755 GBP
View
B
Retailer 14
-
£777 GBP
View
B
Retailer 15
-
£835 GBP
View
B
Retailer 16
-
£989 GBP
View
Most Expensive
B
MOH London
AAF872F4E · Nov 4
£1,287 GBP
View
16 more retailers have this diamond
Prices start from £588 GBPSave up to £699 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.

B+
0.51ct Oval
£588 GBP