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Round|Natural|GIA

2.51ct G SI2 Round Natural Diamond

EX • G/SI2 • GIA 1523286056

Certificate GIA 1523286056

Diamond specifications and retailer prices

From £14,535 GBP
$19,475 USD
As of October 25, 2026
Save £10,939 GBP (43%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £25,474 GBP at MOH London · As of October 26, 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 G colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1523286056. Listed at 16 retailers as of October 25, 2026, with prices from £14,535 to £25,474, a £10,939 spread on the same certified stone. MOH London lists it at £25,474. 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
G
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle32°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 1523286056
Dimensions8.80 × 8.74 × 5.38 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Cert comments
Additional twinning wisps, pinpoints and surface graining are not shown.
Top View
8.80 mm8.74 mm2.51 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 1523286056
Side View
Table 59.0%Crown 32°Girdle: THN-STKPavilion 41.8°Culet: NoneDepth 61.4%

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 25
Current: £25,474 GBP|Low: £14,535 GBP|High: £25,746 GBP|Avg: £18,021 GBP|-0.9%
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
Retailer 14
Retailer 15
Retailer 16
October 30, 2026
Retailer 11£14,535 GBP
Retailer 6£14,918 GBP
Retailer 14£14,975 GBP
Retailer 5£16,289 GBP
Retailer 9£16,421 GBP
Retailer 4£17,043 GBP
Retailer 15£17,104 GBP
Retailer 3£17,569 GBP
Retailer 12£17,569 GBP
Retailer 7£17,647 GBP
Retailer 13£18,151 GBP
Retailer 16£18,325 GBP
Retailer 2£18,799 GBP
Retailer 10£19,121 GBP
Retailer 8£23,077 GBP
MOH London£25,474 GBP

39 data points across 16 retailers

16 retailers£14,535 GBP to £25,474 GBP

A
Cheapest Retailer
-
£14,535 GBP
$19,475 USD
A
Retailer 2
-
£14,918 GBP
$19,988 USD
View
A
Retailer 3
-
£14,975 GBP
$20,065 USD
View
A
Retailer 4
-
£16,289 GBP
$21,826 USD
View
A
Retailer 5
-
£16,421 GBP
View
B+
Retailer 6
-
£17,043 GBP
$22,836 USD
View
B+
Retailer 7
-
£17,104 GBP
$22,917 USD
View
B+
Retailer 8
-
£17,569 GBP
$23,540 USD
View
B+
Retailer 9
-
£17,569 GBP
$23,540 USD
View
B+
Retailer 10
-
£17,647 GBP
$23,645 USD
View
B+
Retailer 11
-
£18,151 GBP
$24,320 USD
View
B+
Retailer 12
-
£18,325 GBP
$24,554 USD
View
B+
Retailer 13
-
£18,799 GBP
View
B+
Retailer 14
-
£19,121 GBP
€24,400 EUR
View
B
Retailer 15
-
£23,077 GBP
$30,920 USD
View
Most Expensive
B
MOH London
192A2BDAA · Oct 26
£25,474 GBP
View
15 more retailers have this diamond
Prices start from £14,535 GBPSave up to £10,939 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
£14,535 GBP