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Oval|Natural|GIA

2.51ct M SI2 Oval Natural Diamond

M/SI2 • GIA 6551117951

Certificate GIA 6551117951

Diamond specifications and retailer prices

From £6,766 GBP
As of November 6, 2026
6 retailers carry this diamond
Most expensive: £7,544 GBP at NZ Jewellers · As of September 26, 2026
View at NZ Jewellers

About this 2.51ct natural oval diamond

This 2.51ct natural oval sits in the two to three carat band, graded M colour (faint-tinted) and SI2 clarity (slightly-included) and certified by GIA 6551117951. Listed at 6 retailers as of November 6, 2026. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

2.51
Carat
M
Colour
SI2
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551117951
Dimensions11.18 × 7.67 × 4.50 mm
L/W Ratio1.46
Top View
11.18 mm7.67 mm2.51 ctM / SI2
OriginNatural
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551117951
Side View
Table 58.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 58.7%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 6
Current: £7,544 GBP|Low: £3,318 GBP|High: £7,544 GBP|Avg: £4,789 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 10£3,318 GBP
Retailer 6£3,404 GBP
Retailer 9£4,022 GBP
Retailer 4£4,510 GBP
Retailer 5£4,510 GBP
Retailer 7£4,510 GBP
Retailer 11£4,627 GBP
Retailer 8£5,204 GBP
Retailer 3£5,271 GBP
Retailer 2£6,766 GBP
NZ Jewellers£7,544 GBP

22 data points across 11 retailers

6 retailers

Retailer 1
-
£3,318 GBP
Price last confirmed 26 days ago
Retailer 2
-
£4,510 GBP
View
Price last confirmed 39 days ago
Retailer 3
-
£4,510 GBP
View
Price last confirmed 38 days ago
Retailer 4
-
£5,204 GBP
View
Price last confirmed 38 days ago
B
Retailer 5
-
£6,766 GBP
View
Most Expensive
NZ Jewellers
c8bf3adf-8362-4357-8aed-1515a2b7a1ef · Sep 26
£7,544 GBP
$10,098 USD
View
Price last confirmed 40 days ago
5 more retailers have this diamond
Prices start from £6,766 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
£6,766 GBP