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Round|Lab Grown|IGI

4.01ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG640419749

Shape and cutting style on the report: Round brilliant

Certificate IGI LG640419749

Diamond specifications and retailer prices

From $642 AUD
$451 USD
As of October 29, 2026
Save $4,825 AUD (88%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $5,467 AUD at Brilliant Earth · As of October 29, 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 LG640419749 or 640419749. Listed at 16 retailers as of October 29, 2026, with prices from $642 to $5,467, a $4,825 spread on the same certified stone. Brilliant Earth lists it at $5,467. 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 angle34.2°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG640419749
Dimensions10.21 × 10.27 × 6.22 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
10.21 mm10.27 mm4.01 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG640419749
Side View
Table 57.0%Crown 34.2°Girdle: MediumPavilion 40.5°Culet: NoneDepth 60.7%

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 29
Current: $5,467 AUD|Low: $642 AUD|High: $6,136 AUD|Avg: $1,791 AUD|-10.9%
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
Retailer 14
Retailer 15
Retailer 16
October 30, 2026
Retailer 4$642 AUD
Retailer 12$719 AUD
Retailer 3$796 AUD
Retailer 16$796 AUD
Retailer 15$1,024 AUD
Retailer 6$1,248 AUD
Retailer 11$1,253 AUD
Retailer 10$1,291 AUD
Retailer 2$1,313 AUD
Retailer 7$1,382 AUD
Retailer 8$1,734 AUD
Retailer 13$2,138 AUD
Retailer 5$2,558 AUD
Retailer 9$2,938 AUD
Retailer 14$3,239 AUD
Brilliant Earth$5,467 AUD

39 data points across 16 retailers

16 retailers$642 AUD to $5,467 AUD

A
Cheapest Retailer
-
$642 AUD
$451 USD
A
Retailer 2
-
$719 AUD
$505 USD
View
A
Retailer 3
-
$796 AUD
$559 USD
View
Retailer 4
-
$796 AUD
$559 USD
View
Price last confirmed 14 days ago
Retailer 5
-
$1,024 AUD
£566 GBP
View
Price last confirmed 13 days ago
B+
Retailer 6
-
$1,248 AUD
$877 USD
View
B+
Retailer 7
-
$1,253 AUD
$880 USD
View
A
Retailer 8
-
$1,291 AUD
€864 EUR
View
A
Retailer 9
-
$1,313 AUD
£726 GBP
View
A
Retailer 10
-
$1,382 AUD
$971 USD
View
B+
Retailer 11
-
$1,734 AUD
$1,218 USD
View
B+
Retailer 12
-
$2,138 AUD
$1,502 USD
View
B+
Retailer 13
-
$2,558 AUD
$1,797 USD
View
B
Retailer 14
-
$2,938 AUD
£1,625 GBP
View
Retailer 15
-
$3,239 AUD
$2,275 USD
View
Price last confirmed 9 days ago
Most Expensive
B
Brilliant Earth
10688124A · Oct 29
$5,467 AUD
$3,840 USD
View
15 more retailers have this diamond
Prices start from $642 AUDSave up to $4,825 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
$642 AUD