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Cushion|Lab Grown|IGI

3.51ct J VS1 Cushion Lab Grown Diamond

VG • J/VS1 • IGI LG794637459

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG794637459

Diamond specifications and retailer prices

From £724 GBP
As of November 6, 2026
Save £286 GBP (28%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £2,476 GBP at MOH London · As of October 26, 2026
View at MOH London

About this 3.51ct lab-grown cushion diamond

This 3.51ct lab-grown cushion sits in the three to five carat band, graded J colour (near-colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG794637459 or 794637459. Listed at 6 retailers as of November 6, 2026, with a 40% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

3.51
Carat
J
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle45.1°
Pavilion angle25.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG794637459
Dimensions16.59 × 6.23 × 3.34 mm
L/W Ratio2.66
Girdle conditionFaceted
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
16.59 mm6.23 mm3.51 ctJ / VS1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateIGI LG794637459
Side View
Table 58.0%Crown 45.1°Girdle: THK-VTKPavilion 25.4°Culet: LargeDepth 53.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: £2,476 GBP|Low: £705 GBP|High: £2,930 GBP|Avg: £1,694 GBP|-13.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 3£724 GBP
Retailer 4£953 GBP
Retailer 2£1,010 GBP
Retailer 8£1,075 GBP
Retailer 6£1,799 GBP
Retailer 5£2,277 GBP
Retailer 7£2,421 GBP
MOH London£2,476 GBP

20 data points across 8 retailers

6 retailers£724 GBP to £1,010 GBP

A
Cheapest Retailer
-
£724 GBP
Retailer 2
-
£953 GBP
View
Price last confirmed 12 days ago
A
Retailer 3
-
£1,010 GBP
View
Retailer 4
-
£1,799 GBP
View
Price last confirmed 14 days ago
Retailer 5
-
£2,277 GBP
View
Price last confirmed 11 days ago
Most Expensive
MOH London
LG794637459 · Oct 26
£2,476 GBP
View
Price last confirmed 11 days ago
5 more retailers have this diamond
Prices start from £724 GBPSave up to £286 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
3.51ct Cushion
£724 GBP