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Heart|Lab Grown|IGI

1.50ct E SI1 Heart Lab Grown Diamond

EX • E/SI1 • IGI LG741510153

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG741510153

Diamond specifications and retailer prices

From £161 GBP
As of November 6, 2026
Save £639 GBP (80%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £799 GBP at Brilliant Earth · As of November 6, 2026
View at Brilliant Earth

About this 1.5ct lab-grown heart diamond

This 1.5ct lab-grown heart sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG741510153 or 741510153. Listed at 17 retailers as of November 6, 2026, with prices from £161 to £799, a £639 spread on the same certified stone. Brilliant Earth lists it at £799. 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

1.50
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.6°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG741510153
Dimensions7.32 × 7.76 × 4.64 mm
L/W Ratio1.06
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.32 mm7.76 mm1.50 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG741510153
Side View
Table 55.0%Crown 33.6°Girdle: MED-THKPavilion 40.4°Culet: NoneDepth 59.8%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £799 GBP|Low: £158 GBP|High: £925 GBP|Avg: £436 GBP|-6.1%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 6, 2026
Retailer 12£161 GBP
Retailer 4£186 GBP
Retailer 5£199 GBP
Retailer 7£205 GBP
Retailer 8£206 GBP
Retailer 10£340 GBP
Retailer 16£341 GBP
Retailer 2£353 GBP
Retailer 9£365 GBP
Retailer 6£394 GBP
Retailer 15£536 GBP
Retailer 13£640 GBP
Retailer 3£651 GBP
Retailer 14£678 GBP
Retailer 11£795 GBP
Brilliant Earth£799 GBP

45 data points across 16 retailers

17 retailers£161 GBP to £799 GBP

A
Cheapest Retailer
-
£161 GBP
A
Retailer 2
-
£186 GBP
View
A
Retailer 3
-
£199 GBP
View
Retailer 4
-
£205 GBP
View
Price last confirmed 12 days ago
A
Retailer 5
-
£206 GBP
View
Final sale: no returns
B+
Retailer 6
-
£340 GBP
View
B+
Retailer 7
-
£341 GBP
View
B+
Retailer 8
-
£353 GBP
View
B+
Retailer 9
-
£365 GBP
View
B+
Retailer 10
-
£394 GBP
View
B+
Retailer 11
-
£406 GBP
View
B+
Retailer 12
-
£536 GBP
View
B
Retailer 13
-
£640 GBP
View
B
Retailer 14
-
£651 GBP
View
B
Retailer 15
-
£678 GBP
View
B
Retailer 16
-
£795 GBP
View
Most Expensive
B
Brilliant Earth
16911377A · Nov 6
£799 GBP
$1,070 USD
View
16 more retailers have this diamond
Prices start from £161 GBPSave up to £639 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
1.50ct Heart
£161 GBP