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2.51ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 2414737837

Certificate GIA 2414737837

Diamond specifications and retailer prices

From £13,885 GBP
$18,605 USD
As of October 25, 2026
Save £11,190 GBP (45%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £25,075 GBP at Diamond Quarter · As of October 29, 2026
View at Diamond Quarter

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 2414737837. Listed at 15 retailers as of October 25, 2026, with prices from £13,885 to £25,075, a £11,190 spread on the same certified stone. Diamond Quarter lists it at £25,075. 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 angle33.5°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 2414737837
Dimensions8.77 × 8.70 × 5.35 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
8.77 mm8.70 mm2.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2414737837
Side View
Table 61.0%Crown 33.5°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 61.3%

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: £16,192 GBP|Low: £13,885 GBP|High: £25,024 GBP|Avg: £17,895 GBP|-0.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 31, 2026
Retailer 5£13,885 GBP
Retailer 6£14,554 GBP
Retailer 1£16,192 GBP
Retailer 7£16,624 GBP
Retailer 3£18,271 GBP
Retailer 2£19,210 GBP
Retailer 4£24,858 GBP

43 data points across 7 retailers

15 retailers£13,885 GBP to £25,075 GBP

A
Cheapest Retailer
-
£13,885 GBP
$18,605 USD
B+
Retailer 2
-
£14,554 GBP
$19,501 USD
View
B+
Retailer 3
-
£15,832 GBP
$21,213 USD
View
B+
Retailer 4
-
£16,192 GBP
View
B+
Retailer 5
-
£16,624 GBP
$22,274 USD
View
B+
Retailer 6
-
£17,128 GBP
$22,950 USD
View
B+
Retailer 7
-
£17,128 GBP
$22,950 USD
View
B+
Retailer 8
-
£17,151 GBP
$22,981 USD
View
B
Retailer 9
-
£17,695 GBP
$23,710 USD
View
B
Retailer 10
-
£17,811 GBP
$23,865 USD
View
B+
Retailer 11
-
£18,271 GBP
View
B
Retailer 12
-
£19,210 GBP
€24,514 EUR
View
B
Retailer 13
-
£22,429 GBP
$30,052 USD
View
B
Retailer 14
-
£24,858 GBP
View
Most Expensive
B
Diamond Quarter
2.51SI2H2437B93DN · Oct 29
£25,075 GBP
View
14 more retailers have this diamond
Prices start from £13,885 GBPSave up to £11,190 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
£13,885 GBP