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Oval|Natural|GIA

2.51ct K SI2 Oval Natural Diamond

ID • K/SI2 • GIA 2554859851

Certificate GIA 2554859851

Diamond specifications and retailer prices

From £8,793 GBP
As of November 4, 2026
Save £5,969 GBP (40%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £14,763 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 2.51ct natural oval diamond

This 2.51ct natural oval sits in the two to three carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2554859851. Listed at 19 retailers as of November 4, 2026, with prices from £8,793 to £14,763, a £5,969 spread on the same certified stone. MOH London lists it at £14,763. 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

2.51
Carat
K
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2554859851
Dimensions10.66 × 7.43 × 4.67 mm
L/W Ratio1.43
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Cloud, Crystal, Needle, Indented Natural
Top View
10.66 mm7.43 mm2.51 ctK / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2554859851
Side View
Table 60.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 62.9%

Caratlytics Score

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

Price History

Last verified: Nov 4
Current: £14,763 GBP|Low: £6,756 GBP|High: £14,980 GBP|Avg: £10,010 GBP|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 5£6,756 GBP
Retailer 3£6,866 GBP
Retailer 4£7,530 GBP
Retailer 12£8,793 GBP
Retailer 11£9,557 GBP
Retailer 6£10,016 GBP
Retailer 13£10,117 GBP
Retailer 9£10,949 GBP
Retailer 2£11,145 GBP
Retailer 8£11,446 GBP
Retailer 10£11,760 GBP
Retailer 7£11,938 GBP
MOH London£14,763 GBP

33 data points across 13 retailers

19 retailers£8,793 GBP to £14,763 GBP

Retailer 1
-
£6,866 GBP
Price last confirmed 56 days ago
B+
Retailer 2
-
£8,793 GBP
View
Retailer 3
-
£9,478 GBP
View
Price last confirmed 29 days ago
B+
Retailer 4
-
£9,557 GBP
View
B+
Retailer 5
-
£10,016 GBP
View
Retailer 6
-
£10,110 GBP
View
Price last confirmed 38 days ago
B+
Retailer 7
-
£10,117 GBP
View
Retailer 8
-
£10,268 GBP
View
Price last confirmed 29 days ago
Retailer 9
-
£10,268 GBP
View
Price last confirmed 43 days ago
Retailer 10
-
£10,663 GBP
View
Price last confirmed 38 days ago
Retailer 11
-
£10,663 GBP
View
Price last confirmed 43 days ago
B+
Retailer 12
-
£10,949 GBP
View
B+
Retailer 13
-
£11,145 GBP
View
B
Retailer 14
-
£11,446 GBP
View
B
Retailer 15
-
£11,760 GBP
View
B
Retailer 16
-
£11,938 GBP
View
Retailer 17
-
£13,427 GBP
View
Price last confirmed 42 days ago
Retailer 18
-
£13,427 GBP
View
Price last confirmed 38 days ago
Most Expensive
B
MOH London
DB46F1EEE · Nov 4
£14,763 GBP
View
18 more retailers have this diamond
Prices start from £8,793 GBPSave up to £5,969 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+
2.51ct Oval
£8,793 GBP