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Cushion|Lab Grown|IGI

4.00ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG842609877

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG842609877

Diamond specifications and retailer prices

From HK$3,868 HKD
£388 GBP
As of October 27, 2026
Save HK$20,924 HKD (84%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: HK$24,792 HKD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 4ct lab-grown cushion diamond

This 4ct 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 LG842609877 or 842609877. Listed at 11 retailers as of October 27, 2026, with prices from HK$3,868 to HK$24,792, a HK$20,924 spread on the same certified stone. Brilliant Earth lists it at HK$24,792. 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

4.00
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle34.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG842609877
Dimensions10.67 × 8.13 × 5.53 mm
L/W Ratio1.31
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.67 mm8.13 mm4.00 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG842609877
Side View
Table 67.0%Crown 34.9°Girdle: MED-THKPavilion 34.4°Culet: NoneDepth 68.0%

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$24,792 HKD|Low: HK$3,827 HKD|High: HK$46,839 HKD|Avg: HK$12,720 HKD|-47.1%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 7HK$3,868 HKD
Retailer 11HK$4,166 HKD
Retailer 12HK$5,021 HKD
Retailer 2HK$6,706 HKD
Retailer 6HK$6,983 HKD
Retailer 9HK$7,210 HKD
Retailer 8HK$7,620 HKD
Retailer 4HK$10,843 HKD
Retailer 5HK$14,462 HKD
Retailer 10HK$16,989 HKD
Retailer 3HK$18,084 HKD
Brilliant EarthHK$24,792 HKD

17 data points across 12 retailers

11 retailersHK$3,868 HKD to HK$24,792 HKD

A
Cheapest Retailer
-
HK$3,868 HKD
£388 GBP
A
Retailer 2
-
HK$5,021 HKD
View
A
Retailer 3
-
HK$6,706 HKD
€814 EUR
View
B+
Retailer 4
-
HK$6,983 HKD
$890 USD
View
B+
Retailer 5
-
HK$7,210 HKD
$919 USD
View
A
Retailer 6
-
HK$7,620 HKD
£765 GBP
View
B+
Retailer 7
-
HK$10,843 HKD
$1,382 USD
View
B+
Retailer 8
-
HK$14,462 HKD
SGD 2,491 SGD
View
B
Retailer 9
-
HK$16,989 HKD
£1,705 GBP
View
B
Retailer 10
-
HK$18,084 HKD
$2,305 USD
View
Most Expensive
B
Brilliant Earth
21831648A · Oct 30
HK$24,792 HKD
$3,160 USD
View
10 more retailers have this diamond
Prices start from HK$3,868 HKDSave up to HK$20,924 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
4.00ct Cushion
HK$3,868 HKD