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Cushion|Lab Grown|IGI

1.51ct F VS2 Cushion Lab Grown Diamond

EX • F/VS2 • IGI LG663402889

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG663402889

Diamond specifications and retailer prices

From £233 GBP
As of November 4, 2026
Save £993 GBP (81%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £1,226 GBP at Brilliant Earth · As of November 5, 2026
View at Brilliant Earth

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 F colour (colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG663402889 or 663402889. Listed at 12 retailers as of November 4, 2026, with prices from £233 to £1,226, a £993 spread on the same certified stone. Brilliant Earth lists it at £1,226. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
F
Colour
VS2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle39°
OriginLab Grown
Grading LabIGI
CertificateIGI LG663402889
Dimensions6.74 × 6.60 × 4.34 mm
L/W Ratio1.02
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.74 mm6.60 mm1.51 ctF / VS2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG663402889
Side View
Table 63.0%Crown 35.9°Girdle: MED-STKPavilion 39°Culet: NoneDepth 65.8%

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 4
Current: £1,226 GBP|Low: £172 GBP|High: £1,248 GBP|Avg: £544 GBP|+5.1%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 5, 2026
Retailer 13£172 GBP
Retailer 8£233 GBP
Retailer 12£308 GBP
Retailer 10£330 GBP
Retailer 6£348 GBP
Retailer 2£359 GBP
Retailer 3£421 GBP
Retailer 4£594 GBP
Retailer 9£602 GBP
Retailer 7£777 GBP
Retailer 11£806 GBP
Retailer 5£837 GBP
Brilliant Earth£1,226 GBP

39 data points across 13 retailers

12 retailers£233 GBP to £1,226 GBP

Retailer 1
-
£172 GBP
Price last confirmed 11 days ago
A
Retailer 2
-
£233 GBP
View
A
Retailer 3
-
£308 GBP
View
B+
Retailer 4
-
£330 GBP
View
A
Retailer 5
-
£348 GBP
View
A
Retailer 6
-
£359 GBP
View
A
Retailer 7
-
£421 GBP
View
Retailer 8
-
£594 GBP
View
Price last confirmed 18 days ago
B+
Retailer 9
-
£602 GBP
View
B
Retailer 10
-
£777 GBP
View
B
Retailer 11
-
£806 GBP
View
Most Expensive
B
Brilliant Earth
12311815A · Nov 5
£1,226 GBP
$1,650 USD
View
11 more retailers have this diamond
Prices start from £233 GBPSave up to £993 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
£233 GBP