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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 HK$3,094 HKD
£311 GBP
As of October 27, 2026
Save HK$17,069 HKD (85%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: HK$20,163 HKD 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 HK$3,094 to HK$20,163, a HK$17,069 spread on the same certified stone. Brilliant Earth lists it at HK$20,163. 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

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: HK$20,163 HKD|Low: HK$3,084 HKD|High: HK$38,052 HKD|Avg: HK$10,280 HKD|-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 7HK$3,094 HKD
Retailer 5HK$3,232 HKD
Retailer 13HK$3,917 HKD
Retailer 2HK$5,462 HKD
Retailer 12HK$5,712 HKD
Retailer 4HK$6,371 HKD
Retailer 8HK$6,415 HKD
Retailer 11HK$9,015 HKD
Retailer 3HK$10,341 HKD
Retailer 6HK$11,223 HKD
Retailer 9HK$13,990 HKD
Retailer 10HK$18,163 HKD
Brilliant EarthHK$20,163 HKD

43 data points across 13 retailers

12 retailersHK$3,094 HKD to HK$20,163 HKD

A
Cheapest Retailer
-
HK$3,094 HKD
£311 GBP
A
Retailer 2
-
HK$3,917 HKD
View
A
Retailer 3
-
HK$5,462 HKD
€663 EUR
View
B+
Retailer 4
-
HK$5,712 HKD
$728 USD
View
A
Retailer 5
-
HK$6,371 HKD
$812 USD
View
A
Retailer 6
-
HK$6,415 HKD
£644 GBP
View
B+
Retailer 7
-
HK$9,015 HKD
$1,149 USD
View
B+
Retailer 8
-
HK$10,341 HKD
$1,318 USD
View
B+
Retailer 9
-
HK$11,223 HKD
SGD 1,933 SGD
View
B+
Retailer 10
-
HK$13,990 HKD
£1,404 GBP
View
B
Retailer 11
-
HK$18,163 HKD
$2,315 USD
View
Most Expensive
B
Brilliant Earth
16748013A · Oct 30
HK$20,163 HKD
$2,570 USD
View
11 more retailers have this diamond
Prices start from HK$3,094 HKDSave up to HK$17,069 HKD

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
HK$3,094 HKD