CaratHunter
Plans
Heart|Natural|GIA

2.51ct E SI1 Heart Natural Diamond

ID • E/SI1 • GIA 1548181494

Certificate GIA 1548181494

Diamond specifications and retailer prices

From £10,431 GBP
As of October 30, 2026
Save £6,195 GBP (37%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £16,626 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 2.51ct natural heart diamond

This 2.51ct natural heart sits in the two to three carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1548181494. Listed at 9 retailers as of October 29, 2026, with prices from £10,431 to £16,626, a £6,195 spread on the same certified stone. MOH London lists it at £16,626. 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
E
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.19°
Pavilion angle41.82°
OriginNatural
Grading LabGIA
CertificateGIA 1548181494
Dimensions9.22 × 7.78 × 5.85 mm
L/W Ratio1.19
Girdle conditionVery Thick
Key to symbols
Crystal, Feather
Top View
9.22 mm7.78 mm2.51 ctE / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1548181494
Side View
Table 58.0%Crown 40.19°Girdle: MediumPavilion 41.82°Culet: NoneDepth 63.4%

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 30
Current: £16,626 GBP|Low: £10,368 GBP|High: £17,265 GBP|Avg: £13,090 GBP|-2.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 30, 2026
Retailer 3£10,431 GBP
Retailer 4£11,369 GBP
Retailer 6£11,380 GBP
Retailer 2£11,714 GBP
Retailer 9£12,431 GBP
Retailer 7£12,468 GBP
Retailer 8£12,662 GBP
Retailer 5£15,001 GBP
MOH London£16,626 GBP

44 data points across 9 retailers

9 retailers£10,431 GBP to £16,626 GBP

A
Cheapest Retailer
-
£10,431 GBP
A
Retailer 2
-
£11,369 GBP
$15,140 USD
View
A
Retailer 3
-
£11,380 GBP
A$23,314 AUD
View
A
Retailer 4
-
£11,714 GBP
View
A
Retailer 5
-
£12,431 GBP
$16,554 USD
View
A
Retailer 6
-
£12,468 GBP
$16,603 USD
View
A
Retailer 7
-
£12,662 GBP
$16,862 USD
View
A
Retailer 8
-
£15,001 GBP
$19,976 USD
View
Most Expensive
A
MOH London
8C505F817 · Oct 29
£16,626 GBP
View
8 more retailers have this diamond
Prices start from £10,431 GBPSave up to £6,195 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 Heart
£10,431 GBP