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Cushion|Lab Grown|IGI

1.50ct H VS1 Cushion Lab Grown Diamond

GD • H/VS1 • IGI LG551211486

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG551211486

Diamond specifications and retailer prices

From £279 GBP
As of November 3, 2026
Save £542 GBP (66%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £821 GBP at MOH London · As of November 2, 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 H colour (near-colourless) and VS1 clarity (very-slightly-included), with a standard cut grade and certified by IGI LG551211486 or 551211486. Listed at 5 retailers as of November 2, 2026, with prices from £279 to £821, a £542 spread on the same certified stone. MOH London lists it at £821. 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
H
Colour
VS1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG551211486
Dimensions6.42 × 6.36 × 4.52 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
6.42 mm6.36 mm1.50 ctH / VS1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG551211486
Side View
Table 62.0%Crown 34°Girdle: THK-ETKPavilion 40.1°Culet: NoneDepth 71.1%

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 3
Current: £821 GBP|Low: £279 GBP|High: £831 GBP|Avg: £526 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 1, 2026
Retailer 5£279 GBP
Retailer 2£322 GBP
Retailer 6£352 GBP
Retailer 3£430 GBP
Retailer 7£693 GBP
Retailer 4£785 GBP
MOH London£821 GBP

11 data points across 7 retailers

5 retailers£279 GBP to £821 GBP

A
Cheapest Retailer
-
£279 GBP
B
Retailer 2
-
£322 GBP
View
B+
Retailer 3
-
£430 GBP
View
B
Retailer 4
-
£785 GBP
View
Most Expensive
B
MOH London
LG551211486 · Nov 2
£821 GBP
View
4 more retailers have this diamond
Prices start from £279 GBPSave up to £542 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
£279 GBP