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Round|Lab Grown|IGI

4.01ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG727578514

Shape and cutting style on the report: Round brilliant

Certificate IGI LG727578514

Diamond specifications and retailer prices

From HK$3,782 HKD
$482 USD
As of October 26, 2026
Save HK$15,818 HKD (81%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: HK$25,106 HKD at Brilliant Earth · As of October 24, 2026
View at Brilliant Earth

About this 4.01ct lab-grown round diamond

This 4.01ct lab-grown round 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 LG727578514 or 727578514. Listed at 17 retailers as of October 26, 2026, with a 418% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

4.01
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.3°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG727578514
Dimensions10.29 × 10.26 × 6.20 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.29 mm10.26 mm4.01 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG727578514
Side View
Table 58.0%Crown 33.3°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 60.3%

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 26
Current: HK$25,106 HKD|Low: HK$3,013 HKD|High: HK$25,812 HKD|Avg: HK$9,720 HKD|-2.7%
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 28, 2026
Retailer 9HK$3,782 HKD
Retailer 3HK$4,229 HKD
Retailer 4HK$4,692 HKD
Retailer 10HK$4,692 HKD
Retailer 2HK$5,806 HKD
Retailer 11HK$7,320 HKD
Retailer 5HK$7,718 HKD
Retailer 12HK$7,901 HKD
Retailer 7HK$10,648 HKD
Retailer 8HK$10,945 HKD
Retailer 6HK$19,599 HKD
Brilliant EarthHK$25,106 HKD

38 data points across 12 retailers

17 retailersHK$3,782 HKD to HK$19,599 HKD

A
Cheapest Retailer
-
HK$3,782 HKD
$482 USD
Retailer 2
-
HK$4,237 HKD
$540 USD
View
Price last confirmed 7 days ago
A
Retailer 3
-
HK$4,692 HKD
$598 USD
View
Retailer 4
-
HK$4,692 HKD
$598 USD
View
Price last confirmed 15 days ago
A
Retailer 5
-
HK$5,806 HKD
$740 USD
View
B+
Retailer 6
-
HK$7,320 HKD
$933 USD
View
A
Retailer 7
-
HK$7,718 HKD
£775 GBP
View
A
Retailer 8
-
HK$7,901 HKD
$1,007 USD
View
B+
Retailer 9
-
HK$9,642 HKD
$1,229 USD
View
B+
Retailer 10
-
HK$10,648 HKD
A$2,088 AUD
View
B+
Retailer 11
-
HK$10,945 HKD
$1,395 USD
View
Retailer 12
-
HK$11,635 HKD
$1,483 USD
View
Price last confirmed 45 days ago
Retailer 13
-
HK$15,072 HKD
$1,921 USD
View
Price last confirmed 7 days ago
B
Retailer 14
-
HK$15,296 HKD
$1,950 USD
View
B
Retailer 15
-
HK$19,599 HKD
£1,967 GBP
View
Retailer 16
-
HK$19,758 HKD
$2,518 USD
View
Price last confirmed 97 days ago
Most Expensive
Brilliant Earth
15507358A · Oct 24
HK$25,106 HKD
$3,200 USD
View
Price last confirmed 7 days ago
16 more retailers have this diamond
Prices start from HK$3,782 HKDSave up to HK$15,818 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
4.01ct Round
HK$3,782 HKD