CaratHunter
Plans
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 $686 AUD
$482 USD
As of October 26, 2026
Save $3,869 AUD (85%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $4,556 AUD 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 24, 2026, with prices from $686 to $4,556, a $3,869 spread on the same certified stone. Brilliant Earth lists it at $4,556. 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: $4,556 AUD|Low: $547 AUD|High: $4,684 AUD|Avg: $1,763 AUD|-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 9$686 AUD
Retailer 3$767 AUD
Retailer 4$851 AUD
Retailer 10$851 AUD
Retailer 2$1,053 AUD
Retailer 11$1,328 AUD
Retailer 5$1,400 AUD
Retailer 12$1,434 AUD
Retailer 7$1,932 AUD
Retailer 8$1,986 AUD
Retailer 6$3,556 AUD
Brilliant Earth$4,556 AUD

39 data points across 12 retailers

17 retailers$686 AUD to $4,556 AUD

A
Cheapest Retailer
-
$686 AUD
$482 USD
A
Retailer 2
-
$769 AUD
$540 USD
View
A
Retailer 3
-
$851 AUD
$598 USD
View
Retailer 4
-
$851 AUD
$598 USD
View
Price last confirmed 14 days ago
A
Retailer 5
-
$1,053 AUD
$740 USD
View
B+
Retailer 6
-
$1,328 AUD
$933 USD
View
A
Retailer 7
-
$1,400 AUD
£775 GBP
View
A
Retailer 8
-
$1,434 AUD
$1,007 USD
View
B+
Retailer 9
-
$1,750 AUD
$1,229 USD
View
B+
Retailer 10
-
$1,932 AUD
View
B+
Retailer 11
-
$1,986 AUD
$1,395 USD
View
Retailer 12
-
$2,111 AUD
$1,483 USD
View
Price last confirmed 44 days ago
B
Retailer 13
-
$2,735 AUD
$1,921 USD
View
B
Retailer 14
-
$2,775 AUD
$1,950 USD
View
B
Retailer 15
-
$3,556 AUD
£1,967 GBP
View
Retailer 16
-
$3,585 AUD
$2,518 USD
View
Price last confirmed 95 days ago
Most Expensive
B
Brilliant Earth
15507358A · Oct 24
$4,556 AUD
$3,200 USD
View
16 more retailers have this diamond
Prices start from $686 AUDSave up to $3,869 AUD

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
$686 AUD