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Radiant|Natural|GIA

2.51ct H SI2 Radiant Natural Diamond

EX • H/SI2 • GIA 1429328624

Certificate GIA 1429328624

Diamond specifications and retailer prices

From £15,799 GBP
$21,169 USD
As of October 30, 2026
Save £10,777 GBP (41%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £26,576 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 2.51ct natural radiant diamond

This 2.51ct natural radiant sits in the two to three carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1429328624. Listed at 9 retailers as of October 30, 2026, with prices from £15,799 to £26,576, a £10,777 spread on the same certified stone. MOH London lists it at £26,576. 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
H
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1429328624
Dimensions8.79 × 6.65 × 4.60 mm
L/W Ratio1.32
Culet sizeNone
Cert comments
Additional clouds are not shown. Pinpoints are not shown.
Top View
8.79 mm6.65 mm2.51 ctH / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1429328624
Side View
Table 64.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 69.1%

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: Oct 30
Current: £26,576 GBP|Low: £15,799 GBP|High: £26,897 GBP|Avg: £20,099 GBP|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 9£15,799 GBP
Retailer 3£17,464 GBP
Retailer 5£17,868 GBP
Retailer 7£18,435 GBP
Retailer 6£19,144 GBP
Retailer 2£19,579 GBP
Retailer 4£20,648 GBP
Retailer 8£24,107 GBP
MOH London£26,576 GBP

31 data points across 9 retailers

9 retailers£15,799 GBP to £26,576 GBP

B+
Cheapest Retailer
-
£15,799 GBP
$21,169 USD
B+
Retailer 2
-
£17,464 GBP
View
B+
Retailer 3
-
£17,868 GBP
$23,941 USD
View
B+
Retailer 4
-
£18,435 GBP
$24,701 USD
View
B
Retailer 5
-
£19,144 GBP
$25,651 USD
View
B
Retailer 6
-
£19,579 GBP
View
B
Retailer 7
-
£20,648 GBP
€26,348 EUR
View
B
Retailer 8
-
£24,107 GBP
$32,301 USD
View
Most Expensive
B
MOH London
A0B044684 · Nov 1
£26,576 GBP
View
8 more retailers have this diamond
Prices start from £15,799 GBPSave up to £10,777 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 Radiant
£15,799 GBP