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Round|Natural|GIA

2.51ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 6392995370

Certificate GIA 6392995370

Diamond specifications and retailer prices

From £14,554 GBP
$19,501 USD
As of October 30, 2026
Save £10,304 GBP (41%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £24,858 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 6392995370. Listed at 14 retailers as of October 29, 2026, with prices from £14,554 to £24,858, a £10,304 spread on the same certified stone. MOH London lists it at £24,858. 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°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6392995370
Dimensions8.61 × 8.66 × 5.40 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
8.61 mm8.66 mm2.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6392995370
Side View
Table 57.0%Crown 36°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.5%

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: £24,858 GBP|Low: £14,315 GBP|High: £25,024 GBP|Avg: £18,319 GBP|+0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 31, 2026
Retailer 3£14,315 GBP
Retailer 6£14,554 GBP
Retailer 12£15,832 GBP
Retailer 2£16,192 GBP
Retailer 8£16,624 GBP
Retailer 10£17,151 GBP
Retailer 11£17,811 GBP
Retailer 7£18,436 GBP
Retailer 5£19,210 GBP
Retailer 4£21,242 GBP
Retailer 9£22,429 GBP
MOH London£24,858 GBP

41 data points across 12 retailers

14 retailers£14,554 GBP to £24,858 GBP

A
Cheapest Retailer
-
£14,554 GBP
$19,501 USD
B+
Retailer 2
-
£15,832 GBP
$21,213 USD
View
B+
Retailer 3
-
£16,192 GBP
View
B+
Retailer 4
-
£16,624 GBP
$22,274 USD
View
B+
Retailer 5
-
£17,128 GBP
$22,950 USD
View
B+
Retailer 6
-
£17,128 GBP
$22,950 USD
View
B+
Retailer 7
-
£17,151 GBP
$22,981 USD
View
B+
Retailer 8
-
£17,695 GBP
$23,710 USD
View
B
Retailer 9
-
£17,811 GBP
$23,865 USD
View
Retailer 10
-
£18,436 GBP
View
Price last confirmed 31 days ago
B
Retailer 11
-
£19,210 GBP
€24,514 EUR
View
B
Retailer 12
-
£22,429 GBP
$30,052 USD
View
B
Retailer 13
-
£24,143 GBP
View
Most Expensive
B
MOH London
ADEFF7D67 · Oct 29
£24,858 GBP
View
13 more retailers have this diamond
Prices start from £14,554 GBPSave up to £10,304 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
£14,554 GBP