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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 $800 NZD
$451 USD
As of November 1, 2026
Save $6,013 NZD (88%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $6,813 NZD at Brilliant Earth · As of October 31, 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 31, 2026, with prices from $800 to $6,813, a $6,013 spread on the same certified stone. Brilliant Earth lists it at $6,813. 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: Nov 1
Current: $6,813 NZD|Low: $800 NZD|High: $7,647 NZD|Avg: $2,227 NZD|-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
November 1, 2026
Retailer 4$800 NZD
Retailer 12$896 NZD
Retailer 3$992 NZD
Retailer 16$992 NZD
Retailer 11$1,242 NZD
Retailer 15$1,276 NZD
Retailer 6$1,556 NZD
Retailer 10$1,606 NZD
Retailer 9$1,622 NZD
Retailer 7$1,723 NZD
Retailer 8$2,161 NZD
Retailer 13$2,665 NZD
Retailer 5$3,188 NZD
Retailer 2$3,644 NZD
Retailer 14$4,037 NZD
Brilliant Earth$6,813 NZD

40 data points across 16 retailers

16 retailers$800 NZD to $6,813 NZD

A
Cheapest Retailer
-
$800 NZD
$451 USD
A
Retailer 2
-
$896 NZD
$505 USD
View
A
Retailer 3
-
$992 NZD
$559 USD
View
Retailer 4
-
$992 NZD
$559 USD
View
Price last confirmed 16 days ago
A
Retailer 5
-
$1,242 NZD
$700 USD
View
Retailer 6
-
$1,276 NZD
£566 GBP
View
Price last confirmed 15 days ago
B+
Retailer 7
-
$1,556 NZD
$877 USD
View
A
Retailer 8
-
$1,606 NZD
€862 EUR
View
A
Retailer 9
-
$1,622 NZD
£720 GBP
View
A
Retailer 10
-
$1,723 NZD
$971 USD
View
B+
Retailer 11
-
$2,161 NZD
$1,218 USD
View
B+
Retailer 12
-
$2,665 NZD
$1,502 USD
View
B+
Retailer 13
-
$3,188 NZD
$1,797 USD
View
B
Retailer 14
-
$3,644 NZD
£1,617 GBP
View
Retailer 15
-
$4,037 NZD
$2,275 USD
View
Price last confirmed 11 days ago
Most Expensive
B
Brilliant Earth
10688124A · Oct 31
$6,813 NZD
$3,840 USD
View
15 more retailers have this diamond
Prices start from $800 NZDSave up to $6,013 NZD

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
$800 NZD