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Cushion|Lab Grown|IGI

4.09ct F VS1 Cushion Lab Grown Diamond

EX • F/VS1 • IGI LG833631311

Shape and cutting style on the report: Rectangular cushion mixed cut

Certificate IGI LG833631311

Diamond specifications and retailer prices

From £774 GBP
$1,038 USD
As of October 31, 2026
Save £1,903 GBP (71%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £2,676 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 4.09ct lab-grown cushion diamond

This 4.09ct lab-grown cushion sits in the three to five carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG833631311 or 833631311. Listed at 14 retailers as of October 31, 2026, with prices from £774 to £2,676, a £1,903 spread on the same certified stone. MOH London lists it at £2,676. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

4.09
Carat
F
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.4°
Pavilion angle42.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG833631311
Dimensions11.47 × 7.84 × 4.78 mm
L/W Ratio1.46
Girdle conditionFaceted
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.47 mm7.84 mm4.09 ctF / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG833631311
Side View
Table 55.0%Crown 32.4°Girdle: STK-VTKPavilion 42.1°Culet: LargeDepth 61.0%

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: Oct 31
Current: £2,676 GBP|Low: £707 GBP|High: £9,378 GBP|Avg: £2,413 GBP|-61.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 2, 2026
Retailer 6£707 GBP
Retailer 5£774 GBP
Retailer 12£861 GBP
Retailer 8£1,088 GBP
Retailer 14£1,151 GBP
Retailer 9£1,171 GBP
Retailer 13£1,256 GBP
Retailer 11£1,520 GBP
Retailer 10£1,530 GBP
Retailer 2£1,589 GBP
Retailer 15£2,217 GBP
Retailer 3£2,268 GBP
Retailer 4£2,473 GBP
MOH London£2,676 GBP
Retailer 7£4,645 GBP

27 data points across 15 retailers

14 retailers£774 GBP to £2,676 GBP

Retailer 1
-
£707 GBP
$949 USD
Price last confirmed 21 days ago
A
Retailer 2
-
£774 GBP
$1,038 USD
View
Final sale: no returns
A
Retailer 3
-
£861 GBP
$1,155 USD
View
A
Retailer 4
-
£1,088 GBP
View
A
Retailer 5
-
£1,151 GBP
$1,544 USD
View
A
Retailer 6
-
£1,171 GBP
€1,496 EUR
View
B+
Retailer 7
-
£1,256 GBP
$1,685 USD
View
B+
Retailer 8
-
£1,520 GBP
ZAR 32,950 ZAR
View
B+
Retailer 9
-
£1,530 GBP
A$3,159 AUD
View
B+
Retailer 10
-
£1,589 GBP
$2,133 USD
View
B
Retailer 11
-
£2,217 GBP
$2,975 USD
View
B
Retailer 12
-
£2,268 GBP
$3,043 USD
View
B
Retailer 13
-
£2,473 GBP
$3,319 USD
View
Most Expensive
B
MOH London
LG833631311 · Nov 1
£2,676 GBP
View
13 more retailers have this diamond
Prices start from £774 GBPSave up to £1,903 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
4.09ct Cushion
£774 GBP