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Cushion|Lab Grown|IGI

1.50ct G SI1 Cushion Lab Grown Diamond

VG • G/SI1 • IGI LG239669923

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG239669923

Diamond specifications and retailer prices

From £403 GBP
$540 USD
As of November 6, 2026
1 retailer carries this diamond
Only listing: £403 GBP at B2C Jewels
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at B2C Jewels

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 SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG239669923 or 239669923. Listed at a single retailer as of November 6, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.50
Carat
G
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG239669923
Dimensions6.38 × 6.21 × 4.32 mm
L/W Ratio1.03
Girdle conditionFaceted
Culet sizePointed
Cert comments
The laboratory grown diamond described above is classified as Type IIa. Laserscribe on Girdle: "LAB GROWN LG 239669923"
Top View
6.38 mm6.21 mm1.50 ctG / SI1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG239669923
Side View
Table 61.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 69.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 6
Current: £403 GBP|Low: £318 GBP|High: £888 GBP|Avg: £558 GBP|-15.5%
B2C Jewels
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
September 23, 2026
Retailer 6£318 GBP
Retailer 7£354 GBP
Retailer 2£363 GBP
B2C Jewels£403 GBP
Retailer 5£609 GBP
Retailer 4£616 GBP
Retailer 8£672 GBP
Retailer 3£789 GBP

70 data points across 8 retailers

1 retailer

B+
B2C Jewels
21612988 · Nov 6
£403 GBP
$540 USD
View

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B+
1.50ct Cushion
£403 GBP