CaratHunter
Plans
Cushion|Lab Grown|IGI

4.04ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG826674036

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG826674036

Diamond specifications and retailer prices

From £371 GBP
As of October 27, 2026
Save £2,017 GBP (84%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £2,388 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 4.04ct lab-grown cushion diamond

This 4.04ct lab-grown cushion sits in the three to five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG826674036 or 826674036. Listed at 12 retailers as of October 27, 2026, with prices from £371 to £2,388, a £2,017 spread on the same certified stone. Brilliant Earth lists it at £2,388. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

4.04
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle35.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG826674036
Dimensions11.34 × 7.89 × 5.23 mm
L/W Ratio1.44
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.34 mm7.89 mm4.04 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG826674036
Side View
Table 65.0%Crown 34.3°Girdle: MED-STKPavilion 35.3°Culet: NoneDepth 66.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 27
Current: £2,388 GBP|Low: £371 GBP|High: £2,388 GBP|Avg: £1,092 GBP
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
October 31, 2026
Retailer 10£371 GBP
Retailer 4£400 GBP
Retailer 7£478 GBP
Retailer 2£639 GBP
Retailer 9£672 GBP
Retailer 12£691 GBP
Retailer 11£732 GBP
Retailer 6£1,022 GBP
Retailer 13£1,052 GBP
Retailer 8£1,389 GBP
Retailer 3£1,631 GBP
Retailer 5£1,735 GBP
Brilliant Earth£2,388 GBP

39 data points across 13 retailers

12 retailers£371 GBP to £2,388 GBP

A
Cheapest Retailer
-
£371 GBP
A
Retailer 2
-
£478 GBP
HK$5,000 HKD
View
A
Retailer 3
-
£639 GBP
€815 EUR
View
A
Retailer 4
-
£672 GBP
$900 USD
View
B+
Retailer 5
-
£691 GBP
$926 USD
View
A
Retailer 6
-
£732 GBP
View
B+
Retailer 7
-
£1,022 GBP
$1,370 USD
View
B+
Retailer 8
-
£1,052 GBP
$1,409 USD
View
B+
Retailer 9
-
£1,389 GBP
SGD 2,515 SGD
View
B+
Retailer 10
-
£1,631 GBP
View
B
Retailer 11
-
£1,735 GBP
$2,325 USD
View
Most Expensive
B
Brilliant Earth
21003239A · Oct 29
£2,388 GBP
$3,200 USD
View
11 more retailers have this diamond
Prices start from £371 GBPSave up to £2,017 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
4.04ct Cushion
£371 GBP