CaratHunter
Plans
Heart|Lab Grown|IGI

2.51ct F SI1 Heart Lab Grown Diamond

ID • F/SI1 • IGI LG512231567

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG512231567

Diamond specifications and retailer prices

From £2,451 GBP
As of November 6, 2026
Save £5,378 GBP (69%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £7,829 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 2.51ct lab-grown heart diamond

This 2.51ct lab-grown heart sits in the two to three carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG512231567 or 512231567. Listed at 13 retailers as of November 5, 2026, with prices from £2,451 to £7,829, a £5,378 spread on the same certified stone. MOH London lists it at £7,829. 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
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle35.7°
Pavilion angle39.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG512231567
Dimensions9.42 × 8.08 × 5.66 mm
L/W Ratio1.17
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
9.42 mm8.08 mm2.51 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG512231567
Side View
Table 59.5%Crown 35.7°Girdle: MED-VTKPavilion 39.4°Culet: NoneDepth 60.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £7,829 GBP|Low: £2,451 GBP|High: £7,945 GBP|Avg: £4,538 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 6£2,451 GBP
Retailer 8£3,269 GBP
Retailer 12£3,425 GBP
Retailer 4£3,660 GBP
Retailer 3£3,792 GBP
Retailer 9£3,792 GBP
Retailer 11£4,737 GBP
Retailer 5£4,866 GBP
Retailer 7£4,933 GBP
Retailer 2£4,980 GBP
Retailer 10£5,867 GBP
MOH London£7,829 GBP

45 data points across 12 retailers

13 retailers£2,451 GBP to £7,829 GBP

B+
Cheapest Retailer
-
£2,451 GBP
B
Retailer 2
-
£3,269 GBP
View
B
Retailer 3
-
£3,425 GBP
View
B
Retailer 4
-
£3,660 GBP
View
Final sale: no returns
B
Retailer 5
-
£3,792 GBP
View
Retailer 6
-
£3,792 GBP
View
Price last confirmed 25 days ago
B
Retailer 7
-
£3,825 GBP
View
B
Retailer 8
-
£4,737 GBP
View
B
Retailer 9
-
£4,866 GBP
View
B
Retailer 10
-
£4,933 GBP
View
B
Retailer 11
-
£4,980 GBP
View
B
Retailer 12
-
£5,867 GBP
View
Most Expensive
B
MOH London
LG512231567 · Nov 5
£7,829 GBP
View
12 more retailers have this diamond
Prices start from £2,451 GBPSave up to £5,378 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.

B+
2.51ct Heart
£2,451 GBP