Cushion|Lab Grown|IGI

4.09ct E SI2 Cushion Lab Grown Diamond

ID • E/SI2 • IGI LG743561585

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG743561585

Diamond specifications and retailer prices

From $394 USD
£311 GBP
As of October 27, 2026
Save $2,176 USD (85%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $2,570 USD at Brilliant Earth · As of October 30, 2026
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 E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG743561585 or 743561585. Listed at 12 retailers as of October 27, 2026, with prices from $394 to $2,570, a $2,176 spread on the same certified stone. Brilliant Earth lists it at $2,570. 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

4.09
Carat
E
Color
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle34.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG743561585
Dimensions9.05 × 8.98 × 5.90 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.05 mm8.98 mm4.09 ctE / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG743561585
Side View
Table 64.0%Crown 35.6°Girdle: MED-THKPavilion 34.9°Culet: NoneDepth 65.7%

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: $2,570 USD|Low: $393 USD|High: $4,850 USD|Avg: $1,310 USD|-47.0%
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 30, 2026
Retailer 7$394 USD
Retailer 5$412 USD
Retailer 13$499 USD
Retailer 2$696 USD
Retailer 12$728 USD
Retailer 4$812 USD
Retailer 8$818 USD
Retailer 11$1,149 USD
Retailer 3$1,318 USD
Retailer 6$1,430 USD
Retailer 9$1,783 USD
Retailer 10$2,315 USD
Brilliant Earth$2,570 USD

43 data points across 13 retailers

12 retailers$394 USD to $2,570 USD

A
Cheapest Retailer
-
$394 USD
£311 GBP
A
Retailer 2
-
$499 USD
HK$3,900 HKD
View
A
Retailer 3
-
$696 USD
€663 EUR
View
B+
Retailer 4
-
$728 USD
View
A
Retailer 5
-
$812 USD
View
A
Retailer 6
-
$818 USD
£644 GBP
View
B+
Retailer 7
-
$1,149 USD
View
B+
Retailer 8
-
$1,318 USD
View
B+
Retailer 9
-
$1,430 USD
SGD 1,933 SGD
View
B+
Retailer 10
-
$1,783 USD
£1,404 GBP
View
B
Retailer 11
-
$2,315 USD
View
Most Expensive
B
Brilliant Earth
16748013A · Oct 30
$2,570 USD
View
11 more retailers have this diamond
Prices start from $394 USDSave up to $2,176 USD

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
$394 USD