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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 $700 NZD
£311 GBP
As of October 27, 2026
Save $3,860 NZD (85%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $4,560 NZD 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 $700 to $4,560, a $3,860 spread on the same certified stone. Brilliant Earth lists it at $4,560. 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
Colour
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

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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: $4,560 NZD|Low: $697 NZD|High: $8,605 NZD|Avg: $2,325 NZD|-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$700 NZD
Retailer 5$731 NZD
Retailer 13$886 NZD
Retailer 2$1,235 NZD
Retailer 12$1,292 NZD
Retailer 4$1,441 NZD
Retailer 8$1,451 NZD
Retailer 11$2,039 NZD
Retailer 3$2,339 NZD
Retailer 6$2,538 NZD
Retailer 9$3,164 NZD
Retailer 10$4,108 NZD
Brilliant Earth$4,560 NZD

43 data points across 13 retailers

12 retailers$700 NZD to $4,560 NZD

A
Cheapest Retailer
-
$700 NZD
£311 GBP
A
Retailer 2
-
$886 NZD
HK$3,900 HKD
View
A
Retailer 3
-
$1,235 NZD
€663 EUR
View
B+
Retailer 4
-
$1,292 NZD
$728 USD
View
A
Retailer 5
-
$1,441 NZD
$812 USD
View
A
Retailer 6
-
$1,451 NZD
£644 GBP
View
B+
Retailer 7
-
$2,039 NZD
$1,149 USD
View
B+
Retailer 8
-
$2,339 NZD
$1,318 USD
View
B+
Retailer 9
-
$2,538 NZD
SGD 1,933 SGD
View
B+
Retailer 10
-
$3,164 NZD
£1,404 GBP
View
B
Retailer 11
-
$4,108 NZD
$2,315 USD
View
Most Expensive
B
Brilliant Earth
16748013A · Oct 30
$4,560 NZD
$2,570 USD
View
11 more retailers have this diamond
Prices start from $700 NZDSave up to $3,860 NZD

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
$700 NZD