Cushion|Lab Grown|IGI

4.09ct F VS1 Cushion Lab Grown Diamond

VG • F/VS1 • IGI LG837675200

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG837675200

Diamond specifications and retailer prices

From £2,933 GBP
$3,930 USD
As of October 31, 2026
13 retailers carry this diamond
Most expensive: £2,933 GBP at Brilliant Earth
View at Brilliant Earth

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 very-good cut grade and certified by IGI LG837675200 or 837675200. Listed at 13 retailers as of October 31, 2026. 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

4.09
Carat
F
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle33.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG837675200
Dimensions11.48 × 8.27 × 5.03 mm
L/W Ratio1.39
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.48 mm8.27 mm4.09 ctF / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG837675200
Side View
Table 66.0%Crown 36.4°Girdle: MED-THKPavilion 33.6°Culet: NoneDepth 60.8%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £2,933 GBP|Low: £444 GBP|High: £2,948 GBP|Avg: £1,324 GBP|-0.5%
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
October 26, 2026
Retailer 2£444 GBP
Retailer 9£478 GBP
Retailer 18£612 GBP
Retailer 7£765 GBP
Retailer 19£770 GBP
Retailer 16£814 GBP
Retailer 12£822 GBP
Retailer 17£1,046 GBP
Retailer 5£1,193 GBP
Retailer 15£1,535 GBP
Retailer 6£1,671 GBP
Retailer 3£1,692 GBP
Retailer 4£1,702 GBP
Retailer 8£1,713 GBP
Retailer 10£2,268 GBP
Retailer 14£2,302 GBP
Retailer 13£2,319 GBP
Retailer 11£2,380 GBP
Brilliant Earth£2,933 GBP

21 data points across 19 retailers

13 retailers

Retailer 1
-
£814 GBP
$1,091 USD
Price last confirmed 17 days ago
Retailer 2
-
£822 GBP
View
Price last confirmed 16 days ago
Retailer 3
-
£1,046 GBP
ZAR 22,652 ZAR
View
Price last confirmed 18 days ago
Retailer 4
-
£1,193 GBP
$1,599 USD
View
Price last confirmed 13 days ago
Retailer 5
-
£1,535 GBP
View
Price last confirmed 17 days ago
Retailer 6
-
£1,671 GBP
SGD 3,026 SGD
View
Price last confirmed 16 days ago
Retailer 7
-
£1,692 GBP
$2,268 USD
View
Price last confirmed 17 days ago
Retailer 8
-
£1,702 GBP
$2,281 USD
View
Price last confirmed 16 days ago
Retailer 9
-
£1,713 GBP
$2,295 USD
View
Price last confirmed 16 days ago
Retailer 10
-
£2,268 GBP
A$4,675 AUD
View
Price last confirmed 25 days ago
Retailer 11
-
£2,302 GBP
$3,085 USD
View
Price last confirmed 18 days ago
Retailer 12
-
£2,319 GBP
View
Price last confirmed 18 days ago
Most Expensive
B
Brilliant Earth
21808162AB · Oct 31
£2,933 GBP
$3,930 USD
View
12 more retailers have this diamond

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.

B
4.09ct Cushion
£2,933 GBP