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Round|Natural|GIA

2.51ct G SI2 Round Natural Diamond

EX • G/SI2 • GIA 1555877286

Certificate GIA 1555877286

Diamond specifications and retailer prices

From £13,620 GBP
₹1,738,077 INR
As of November 1, 2026
Save £10,824 GBP (44%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £24,445 GBP at MOH London · As of November 1, 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 1555877286. Listed at 16 retailers as of November 1, 2026, with prices from £13,620 to £24,445, a £10,824 spread on the same certified stone. MOH London lists it at £24,445. 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
FluorescenceNone
Crown angle36°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 1555877286
Dimensions8.65 × 8.60 × 5.41 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Indented Natural
Top View
8.65 mm8.60 mm2.51 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1555877286
Side View
Table 59.0%Crown 36°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.7%

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: Nov 1
Current: £24,445 GBP|Low: £13,620 GBP|High: £25,377 GBP|Avg: £18,280 GBP|-3.7%
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
November 1, 2026
Retailer 9£13,620 GBP
Retailer 8£15,220 GBP
Retailer 15£15,883 GBP
Retailer 3£15,968 GBP
Retailer 13£16,007 GBP
Retailer 11£17,128 GBP
Retailer 5£17,277 GBP
Retailer 12£17,887 GBP
Retailer 2£18,107 GBP
Retailer 6£18,140 GBP
Retailer 7£18,140 GBP
Retailer 14£18,589 GBP
Retailer 10£19,085 GBP
Retailer 16£19,436 GBP
Retailer 4£22,173 GBP
MOH London£24,445 GBP

20 data points across 16 retailers

16 retailers£13,620 GBP to £24,445 GBP

A
Cheapest Retailer
-
£13,620 GBP
₹1,738,077 INR
A
Retailer 2
-
£15,220 GBP
$20,393 USD
View
Final sale: no returns
A
Retailer 3
-
£15,883 GBP
$21,281 USD
View
A
Retailer 4
-
£15,968 GBP
$21,395 USD
View
A
Retailer 5
-
£16,007 GBP
View
A
Retailer 6
-
£17,128 GBP
$22,950 USD
View
B+
Retailer 7
-
£17,277 GBP
$23,149 USD
View
B+
Retailer 8
-
£17,887 GBP
View
B+
Retailer 9
-
£18,107 GBP
€23,106 EUR
View
B+
Retailer 10
-
£18,140 GBP
$24,306 USD
View
B+
Retailer 11
-
£18,140 GBP
$24,306 USD
View
B+
Retailer 12
-
£18,589 GBP
$24,907 USD
View
B+
Retailer 13
-
£19,085 GBP
$25,572 USD
View
B+
Retailer 14
-
£19,436 GBP
$26,042 USD
View
B+
Retailer 15
-
£22,173 GBP
$29,710 USD
View
Most Expensive
B+
MOH London
479FC1984 · Nov 1
£24,445 GBP
View
15 more retailers have this diamond
Prices start from £13,620 GBPSave up to £10,824 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
£13,620 GBP