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Cushion|Lab Grown|IGI

1.52ct D SI1 Cushion Lab Grown Diamond

EX • D/SI1 • IGI LG516276229

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG516276229

Diamond specifications and retailer prices

From £202 GBP
As of November 6, 2026
Save £217 GBP (52%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £902 GBP at MOH London · As of October 21, 2026
View at MOH London

About this 1.52ct lab-grown cushion diamond

This 1.52ct lab-grown cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG516276229 or 516276229. Listed at 8 retailers as of November 6, 2026, with a 107% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.52
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG516276229
Dimensions6.65 × 6.52 × 4.45 mm
L/W Ratio1.02
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
6.65 mm6.52 mm1.52 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG516276229
Side View
Table 58.5%Crown 35.6°Girdle: MED-VTKPavilion 40.1°Culet: NoneDepth 68.3%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: £902 GBP|Low: £144 GBP|High: £908 GBP|Avg: £454 GBP|-0.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 7£202 GBP
Retailer 4£224 GBP
Retailer 6£377 GBP
Retailer 5£383 GBP
Retailer 8£412 GBP
Retailer 2£420 GBP
Retailer 3£777 GBP
MOH London£902 GBP

39 data points across 8 retailers

8 retailers£202 GBP to £420 GBP

A
Cheapest Retailer
-
£202 GBP
Final sale: no returns
Retailer 2
-
£224 GBP
View
Price last confirmed 21 days ago
A
Retailer 3
-
£377 GBP
View
A
Retailer 4
-
£383 GBP
View
B+
Retailer 5
-
£412 GBP
View
A
Retailer 6
-
£420 GBP
View
Retailer 7
-
£777 GBP
View
Price last confirmed 16 days ago
Most Expensive
MOH London
LG516276229 · Oct 21
£902 GBP
View
Price last confirmed 16 days ago
7 more retailers have this diamond
Prices start from £202 GBPSave up to £217 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
1.52ct Cushion
£202 GBP