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Cushion|Lab Grown|IGI

4.02ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG743599835

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

Certificate IGI LG743599835

Diamond specifications and retailer prices

From $458 USD
£360 GBP
As of October 27, 2026
Save $2,722 USD (86%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $3,180 USD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 4.02ct lab-grown cushion diamond

This 4.02ct 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 LG743599835 or 743599835. Listed at 14 retailers as of October 27, 2026, with prices from $458 to $3,180, a $2,722 spread on the same certified stone. Brilliant Earth lists it at $3,180. 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

4.02
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.7°
Pavilion angle31.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG743599835
Dimensions9.03 × 8.73 × 5.56 mm
L/W Ratio1.03
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.03 mm8.73 mm4.02 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG743599835
Side View
Table 61.0%Crown 32.7°Girdle: MED-STKPavilion 31.7°Culet: NoneDepth 63.7%

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: $3,180 USD|Low: $456 USD|High: $3,180 USD|Avg: $1,307 USD
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
October 31, 2026
Retailer 11$458 USD
Retailer 6$493 USD
Retailer 8$589 USD
Retailer 14$650 USD
Retailer 7$826 USD
Retailer 3$857 USD
Retailer 5$885 USD
Retailer 12$897 USD
Retailer 2$1,297 USD
Retailer 4$1,383 USD
Retailer 10$1,709 USD
Retailer 13$2,009 USD
Retailer 9$2,305 USD
Brilliant Earth$3,180 USD

40 data points across 14 retailers

14 retailers$458 USD to $3,180 USD

A
Cheapest Retailer
-
$458 USD
£360 GBP
A
Retailer 2
-
$589 USD
HK$4,600 HKD
View
A
Retailer 3
-
$650 USD
View
A
Retailer 4
-
$826 USD
€787 EUR
View
B+
Retailer 5
-
$857 USD
View
A
Retailer 6
-
$885 USD
View
A
Retailer 7
-
$897 USD
£707 GBP
View
B+
Retailer 8
-
$1,297 USD
View
B+
Retailer 9
-
$1,383 USD
View
B+
Retailer 10
-
$1,709 USD
SGD 2,310 SGD
View
B+
Retailer 11
-
$2,009 USD
£1,582 GBP
View
B+
Retailer 12
-
$2,305 USD
View
B
Retailer 13
-
$2,315 USD
View
Most Expensive
B
Brilliant Earth
16748012A · Oct 29
$3,180 USD
View
13 more retailers have this diamond
Prices start from $458 USDSave up to $2,722 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
4.02ct Cushion
$458 USD