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Round|Natural|GIA

2.51ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 2195428383

Certificate GIA 2195428383

Diamond specifications and retailer prices

From £14,397 GBP
$19,290 USD
As of October 25, 2026
Save £11,397 GBP (44%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £25,794 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 2195428383. Listed at 17 retailers as of October 25, 2026, with prices from £14,397 to £25,794, a £11,397 spread on the same certified stone. MOH London lists it at £25,794. 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
SymmetryVery Good
FluorescenceFaint
Crown angle35°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2195428383
Dimensions8.67 × 8.61 × 5.37 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Culet sizeNone
Top View
8.67 mm8.61 mm2.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2195428383
Side View
Table 55.0%Crown 35°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.4%

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: £25,794 GBP|Low: £14,397 GBP|High: £25,966 GBP|Avg: £17,682 GBP|-0.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 1, 2026
Retailer 5£14,397 GBP
Retailer 3£15,227 GBP
Retailer 6£15,743 GBP
Retailer 2£16,561 GBP
Retailer 7£17,249 GBP
Retailer 4£19,285 GBP
MOH London£25,794 GBP

38 data points across 7 retailers

17 retailers£14,397 GBP to £25,794 GBP

A
Cheapest Retailer
-
£14,397 GBP
$19,290 USD
B+
Retailer 2
-
£15,079 GBP
$20,204 USD
View
B+
Retailer 3
-
£15,103 GBP
$20,236 USD
View
B+
Retailer 4
-
£15,227 GBP
₹1,943,044 INR
View
B+
Retailer 5
-
£15,743 GBP
$21,094 USD
View
Final sale: no returns
B+
Retailer 6
-
£16,428 GBP
$22,012 USD
View
B+
Retailer 7
-
£16,561 GBP
View
B+
Retailer 8
-
£17,249 GBP
$23,112 USD
View
B+
Retailer 9
-
£17,509 GBP
$23,460 USD
View
B+
Retailer 10
-
£17,509 GBP
$23,460 USD
View
B
Retailer 11
-
£17,556 GBP
$23,523 USD
View
B
Retailer 12
-
£17,797 GBP
$23,846 USD
View
B
Retailer 13
-
£18,091 GBP
$24,240 USD
View
B
Retailer 14
-
£18,481 GBP
$24,763 USD
View
B+
Retailer 15
-
£19,285 GBP
€24,609 EUR
View
B
Retailer 16
-
£23,273 GBP
$31,183 USD
View
Most Expensive
B
MOH London
5797D3460 · Oct 29
£25,794 GBP
View
16 more retailers have this diamond
Prices start from £14,397 GBPSave up to £11,397 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
£14,397 GBP