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2.51ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 1539231448

Certificate GIA 1539231448

Diamond specifications and retailer prices

From £14,644 GBP
$19,621 USD
As of October 30, 2026
Save £12,398 GBP (46%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £27,042 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 2.51ct natural round diamond

This 2.51ct natural round sits in the two to three carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1539231448. Listed at 11 retailers as of October 29, 2026, with prices from £14,644 to £27,042, a £12,398 spread on the same certified stone. MOH London lists it at £27,042. 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

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 1539231448
Dimensions8.61 × 8.65 × 5.42 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Cert comments
Additional twinning wisps, additional clouds, pinpoints and surface graining are not shown.
Top View
8.61 mm8.65 mm2.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1539231448
Side View
Table 56.0%Crown 36.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.8%

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: Oct 30
Current: £27,042 GBP|Low: £14,644 GBP|High: £27,222 GBP|Avg: £19,434 GBP|+0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 31, 2026
Retailer 7£14,644 GBP
Retailer 4£16,784 GBP
Retailer 6£17,317 GBP
Retailer 2£17,367 GBP
Retailer 8£17,734 GBP
Retailer 9£20,056 GBP
Retailer 5£20,516 GBP
Retailer 3£20,898 GBP
MOH London£27,042 GBP

43 data points across 9 retailers

11 retailers£14,644 GBP to £27,042 GBP

A
Cheapest Retailer
-
£14,644 GBP
$19,621 USD
B+
Retailer 2
-
£16,015 GBP
$21,459 USD
View
B+
Retailer 3
-
£16,784 GBP
$22,489 USD
View
B+
Retailer 4
-
£17,317 GBP
$23,203 USD
View
B+
Retailer 5
-
£17,367 GBP
View
B+
Retailer 6
-
£17,734 GBP
$23,762 USD
View
Retailer 7
-
£20,056 GBP
View
Price last confirmed 31 days ago
B+
Retailer 8
-
£20,516 GBP
$27,489 USD
View
B
Retailer 9
-
£20,898 GBP
€26,667 EUR
View
B
Retailer 10
-
£24,399 GBP
$32,692 USD
View
Most Expensive
B
MOH London
82FF63EEA · Oct 29
£27,042 GBP
View
10 more retailers have this diamond
Prices start from £14,644 GBPSave up to £12,398 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
2.51ct Round
£14,644 GBP