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Heart|Lab Grown|IGI

1.49ct E SI1 Heart Lab Grown Diamond

EX • E/SI1 • IGI LG733545388

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG733545388

Diamond specifications and retailer prices

From £338 GBP
As of November 6, 2026
Save £448 GBP (57%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £787 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 1.49ct lab-grown heart diamond

This 1.49ct lab-grown heart sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG733545388 or 733545388. Listed at 5 retailers as of November 5, 2026, with prices from £338 to £787, a £448 spread on the same certified stone. MOH London lists it at £787. 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

1.49
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle40.2°
Pavilion angle37.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG733545388
Dimensions6.84 × 7.93 × 4.65 mm
L/W Ratio1.16
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.84 mm7.93 mm1.49 ctE / SI1
OriginLab Grown
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG733545388
Side View
Table 61.0%Crown 40.2°Girdle: STK-THKPavilion 37.1°Culet: NoneDepth 58.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: £787 GBP|Low: £332 GBP|High: £798 GBP|Avg: £470 GBP|+0.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 4£338 GBP
Retailer 2£360 GBP
Retailer 5£433 GBP
Retailer 3£442 GBP
MOH London£787 GBP

36 data points across 5 retailers

5 retailers£338 GBP to £787 GBP

A
Cheapest Retailer
-
£338 GBP
B+
Retailer 2
-
£360 GBP
View
B+
Retailer 3
-
£433 GBP
View
B+
Retailer 4
-
£442 GBP
View
Most Expensive
B
MOH London
LG733545388 · Nov 5
£787 GBP
View
4 more retailers have this diamond
Prices start from £338 GBPSave up to £448 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
1.49ct Heart
£338 GBP