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Cushion|Lab Grown|IGI

4.07ct E SI1 Cushion Lab Grown Diamond

EX • E/SI1 • IGI LG823638918

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

Certificate IGI LG823638918

Diamond specifications and retailer prices

From HK$3,978 HKD
$507 USD
As of October 31, 2026
Save HK$3,516 HKD (47%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: HK$7,494 HKD at 77 Diamonds · As of October 31, 2026
View at 77 Diamonds

About this 4.07ct lab-grown cushion diamond

This 4.07ct 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 LG823638918 or 823638918. Listed at 2 retailers as of October 31, 2026, with prices from HK$3,978 to HK$7,494, a HK$3,516 spread on the same certified stone. 77 Diamonds lists it at HK$7,494. 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

4.07
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.6°
Pavilion angle39.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG823638918
Dimensions9.27 × 9.23 × 6.18 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.27 mm9.23 mm4.07 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG823638918
Side View
Table 62.0%Crown 33.6°Girdle: MED-THKPavilion 39.9°Culet: NoneDepth 67.0%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 31
Current: HK$7,494 HKD|Low: HK$3,978 HKD|High: HK$11,055 HKD|Avg: HK$7,646 HKD|-6.2%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 31, 2026
Retailer 2HK$3,978 HKD
Retailer 3HK$5,767 HKD
Retailer 5HK$7,108 HKD
77 DiamondsHK$7,494 HKD
Retailer 4HK$11,055 HKD

37 data points across 5 retailers

2 retailersHK$3,978 HKD to HK$7,494 HKD

A
Cheapest Retailer
-
HK$3,978 HKD
$507 USD
Final sale: no returns
Most Expensive
A
77 Diamonds
CUSTVSCWZ6KZZX · Oct 31
HK$7,494 HKD
£752 GBP
View
1 more retailer has this diamond
Prices start from HK$3,978 HKDSave up to HK$3,516 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
4.07ct Cushion
HK$3,978 HKD