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Cushion|Lab Grown|IGI

4.40ct F SI1 Cushion Lab Grown Diamond

ID • F/SI1 • IGI LG822633154

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG822633154

Diamond specifications and retailer prices

From £490 GBP
As of October 27, 2026
Save £2,066 GBP (81%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £2,556 GBP at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 4.4ct lab-grown cushion diamond

This 4.4ct lab-grown cushion sits in the three to five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG822633154 or 822633154. Listed at 12 retailers as of October 27, 2026, with prices from £490 to £2,556, a £2,066 spread on the same certified stone. Brilliant Earth lists it at £2,556. 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

4.40
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle31.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG822633154
Dimensions11.41 × 8.37 × 5.35 mm
L/W Ratio1.36
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.41 mm8.37 mm4.40 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG822633154
Side View
Table 61.0%Crown 34.9°Girdle: MED-THKPavilion 31.5°Culet: NoneDepth 63.9%

Caratlytics Score

How it works →
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 27
Current: £2,556 GBP|Low: £488 GBP|High: £4,829 GBP|Avg: £1,533 GBP|-47.1%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 8£490 GBP
Retailer 7£601 GBP
Retailer 3£663 GBP
Retailer 5£804 GBP
Retailer 12£867 GBP
Retailer 9£881 GBP
Retailer 4£1,044 GBP
Retailer 2£1,206 GBP
Retailer 6£1,746 GBP
Retailer 11£2,344 GBP
Retailer 10£2,460 GBP
Brilliant Earth£2,556 GBP

40 data points across 12 retailers

12 retailers£490 GBP to £2,556 GBP

A
Cheapest Retailer
-
£490 GBP
A
Retailer 2
-
£601 GBP
HK$6,300 HKD
View
Retailer 3
-
£663 GBP
$890 USD
View
Price last confirmed 5 days ago
A
Retailer 4
-
£804 GBP
€1,028 EUR
View
B+
Retailer 5
-
£867 GBP
$1,164 USD
View
Price last confirmed 6 days ago
A
Retailer 6
-
£881 GBP
View
B+
Retailer 7
-
£1,044 GBP
$1,401 USD
View
B+
Retailer 8
-
£1,206 GBP
$1,619 USD
View
B+
Retailer 9
-
£1,746 GBP
SGD 3,167 SGD
View
Retailer 10
-
£2,344 GBP
$3,145 USD
View
Price last confirmed 14 days ago
Retailer 11
-
£2,460 GBP
View
Price last confirmed 8 days ago
Most Expensive
B
Brilliant Earth
20801264A · Nov 2
£2,556 GBP
$3,430 USD
View
11 more retailers have this diamond
Prices start from £490 GBPSave up to £2,066 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
4.40ct Cushion
£490 GBP