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Cushion|Lab Grown|IGI

1.51ct E SI1 Cushion Lab Grown Diamond

VG • E/SI1 • IGI LG560215971

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG560215971

Diamond specifications and retailer prices

From £157 GBP
As of November 6, 2026
Save £652 GBP (81%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £808 GBP at MOH London · As of November 7, 2026
View at MOH London

About this 1.51ct lab-grown cushion diamond

This 1.51ct 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 very-good cut grade and certified by IGI LG560215971 or 560215971. Listed at 12 retailers as of November 6, 2026, with prices from £157 to £808, a £652 spread on the same certified stone. MOH London lists it at £808. 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

1.51
Carat
E
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle28.9°
Pavilion angle34.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG560215971
Dimensions6.52 × 6.21 × 4.30 mm
L/W Ratio1.05
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
6.52 mm6.21 mm1.51 ctE / SI1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateIGI LG560215971
Side View
Table 58.0%Crown 28.9°Girdle: MED-STKPavilion 34.2°Culet: NoneDepth 69.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: £808 GBP|Low: £157 GBP|High: £823 GBP|Avg: £403 GBP|-1.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 7, 2026
Retailer 9£157 GBP
Retailer 6£174 GBP
Retailer 4£223 GBP
Retailer 8£305 GBP
Retailer 5£311 GBP
Retailer 2£399 GBP
Retailer 10£423 GBP
Retailer 3£643 GBP
Retailer 7£654 GBP
MOH London£808 GBP

43 data points across 10 retailers

12 retailers£157 GBP to £808 GBP

A
Cheapest Retailer
-
£157 GBP
Final sale: no returns
A
Retailer 2
-
£174 GBP
View
A
Retailer 3
-
£223 GBP
View
B+
Retailer 4
-
£305 GBP
View
A
Retailer 5
-
£311 GBP
View
B+
Retailer 6
-
£336 GBP
View
B+
Retailer 7
-
£399 GBP
View
B+
Retailer 8
-
£423 GBP
View
B
Retailer 9
-
£598 GBP
View
B
Retailer 10
-
£643 GBP
View
Retailer 11
-
£654 GBP
View
Price last confirmed 19 days ago
Most Expensive
B
MOH London
LG560215971 · Nov 7
£808 GBP
View
11 more retailers have this diamond
Prices start from £157 GBPSave up to £652 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
1.51ct Cushion
£157 GBP