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Cushion|Lab Grown|IGI

1.50ct E SI1 Cushion Lab Grown Diamond

EX • E/SI1 • IGI LG784633426

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG784633426

Diamond specifications and retailer prices

From £144 GBP
As of November 6, 2026
Save £603 GBP (81%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £748 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 1.5ct lab-grown cushion diamond

This 1.5ct lab-grown cushion 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 LG784633426 or 784633426. Listed at 14 retailers as of November 5, 2026, with prices from £144 to £748, a £603 spread on the same certified stone. MOH London lists it at £748. 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 angle34.4°
Pavilion angle36.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG784633426
Dimensions8.04 × 5.87 × 3.75 mm
L/W Ratio1.37
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.04 mm5.87 mm1.50 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG784633426
Side View
Table 60.0%Crown 34.4°Girdle: MED-STKPavilion 36.7°Culet: NoneDepth 63.9%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: £748 GBP|Low: £144 GBP|High: £799 GBP|Avg: £421 GBP|-2.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 8£144 GBP
Retailer 6£204 GBP
Retailer 2£265 GBP
Retailer 7£282 GBP
Retailer 9£285 GBP
Retailer 4£303 GBP
Retailer 11£337 GBP
Retailer 5£356 GBP
Retailer 10£407 GBP
Retailer 13£525 GBP
Retailer 3£635 GBP
Retailer 12£687 GBP
MOH London£748 GBP

44 data points across 13 retailers

14 retailers£144 GBP to £748 GBP

A
Cheapest Retailer
-
£144 GBP
Final sale: no returns
A
Retailer 2
-
£182 GBP
View
A
Retailer 3
-
£204 GBP
View
A
Retailer 4
-
£265 GBP
View
A
Retailer 5
-
£282 GBP
View
B+
Retailer 6
-
£285 GBP
View
Retailer 7
-
£303 GBP
View
Price last confirmed 23 days ago
A
Retailer 8
-
£337 GBP
View
Retailer 9
-
£356 GBP
View
Price last confirmed 11 days ago
A
Retailer 10
-
£407 GBP
View
B+
Retailer 11
-
£525 GBP
View
Retailer 12
-
£635 GBP
View
Price last confirmed 16 days ago
B
Retailer 13
-
£687 GBP
View
Most Expensive
B
MOH London
LG784633426 · Nov 5
£748 GBP
View
13 more retailers have this diamond
Prices start from £144 GBPSave up to £603 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 Cushion
£144 GBP