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Cushion|Lab Grown|IGI

1.51ct I VS1 Cushion Lab Grown Diamond

EX • I/VS1 • IGI LG649405817

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

Certificate IGI LG649405817

Diamond specifications and retailer prices

From £261 GBP
As of November 5, 2026
Save £696 GBP (73%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £957 GBP at MOH London · As of November 5, 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 I colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG649405817 or 649405817. Listed at 8 retailers as of November 5, 2026, with prices from £261 to £957, a £696 spread on the same certified stone. MOH London lists it at £957. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
I
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.7°
Pavilion angle39.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG649405817
Dimensions6.56 × 6.53 × 4.47 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.56 mm6.53 mm1.51 ctI / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG649405817
Side View
Table 60.0%Crown 37.7°Girdle: MED-THKPavilion 39.4°Culet: NoneDepth 68.5%

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 5
Current: £957 GBP|Low: £260 GBP|High: £971 GBP|Avg: £582 GBP|-0.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 5, 2026
Retailer 3£261 GBP
Retailer 4£367 GBP
Retailer 5£403 GBP
Retailer 2£519 GBP
Retailer 7£607 GBP
Retailer 6£894 GBP
MOH London£957 GBP

17 data points across 7 retailers

8 retailers£261 GBP to £957 GBP

A
Cheapest Retailer
-
£261 GBP
A
Retailer 2
-
£367 GBP
View
A
Retailer 3
-
£403 GBP
View
A
Retailer 4
-
£519 GBP
View
Retailer 5
-
£593 GBP
View
Price last confirmed 88 days ago
Retailer 6
-
£600 GBP
View
Price last confirmed 31 days ago
B
Retailer 7
-
£894 GBP
View
Most Expensive
B
MOH London
LG649405817 · Nov 5
£957 GBP
View
7 more retailers have this diamond
Prices start from £261 GBPSave up to £696 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
£261 GBP