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Cushion|Lab Grown|IGI

1.50ct G SI2 Cushion Lab Grown Diamond

EX • G/SI2 • IGI LG476154411

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG476154411

Diamond specifications and retailer prices

From £349 GBP
$468 USD
As of November 1, 2026
Save £905 GBP (72%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £1,254 GBP at MOH London · As of October 29, 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 G colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG476154411 or 476154411. Listed at 5 retailers as of October 29, 2026, with prices from £349 to £1,254, a £905 spread on the same certified stone. MOH London lists it at £1,254. 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
G
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.8°
Pavilion angle36.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG476154411
Dimensions7.89 × 6.37 × 4.09 mm
L/W Ratio1.24
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
7.89 mm6.37 mm1.50 ctG / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG476154411
Side View
Table 57.0%Crown 36.8°Girdle: MED-STKPavilion 36.4°Culet: NoneDepth 64.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: £1,254 GBP|Low: £349 GBP|High: £1,263 GBP|Avg: £616 GBP|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 1, 2026
Retailer 5£349 GBP
Retailer 3£494 GBP
Retailer 4£513 GBP
Retailer 2£574 GBP
MOH London£1,254 GBP

42 data points across 5 retailers

5 retailers£349 GBP to £1,254 GBP

A
Cheapest Retailer
-
£349 GBP
$468 USD
B+
Retailer 2
-
£494 GBP
€631 EUR
View
B+
Retailer 3
-
£513 GBP
$688 USD
View
B+
Retailer 4
-
£574 GBP
View
Most Expensive
B
MOH London
LG476154411 · Oct 29
£1,254 GBP
View
4 more retailers have this diamond
Prices start from £349 GBPSave up to £905 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
£349 GBP