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Round|Lab Grown|IGI

4.00ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG673407355

Shape and cutting style on the report: Round brilliant

Certificate IGI LG673407355

Diamond specifications and retailer prices

From $798 NZD
$450 USD
As of November 1, 2026
Save $5,997 NZD (88%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $6,796 NZD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 4ct lab-grown round diamond

This 4ct 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 LG673407355 or 673407355. Listed at 15 retailers as of October 31, 2026, with prices from $798 to $6,796, a $5,997 spread on the same certified stone. Brilliant Earth lists it at $6,796. 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 angle35.1°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG673407355
Dimensions10.18 × 10.11 × 6.23 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
HEARTS & ARROWS This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.18 mm10.11 mm4.00 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG673407355
Side View
Table 57.0%Crown 35.1°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 61.3%

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: Nov 1
Current: $6,796 NZD|Low: $798 NZD|High: $7,647 NZD|Avg: $2,561 NZD|-11.1%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 1, 2026
Retailer 2$798 NZD
Retailer 4$990 NZD
Retailer 10$990 NZD
Retailer 12$1,242 NZD
Retailer 3$1,273 NZD
Retailer 5$1,553 NZD
Retailer 11$1,600 NZD
Retailer 9$1,618 NZD
Retailer 6$1,721 NZD
Retailer 7$2,152 NZD
Retailer 14$2,660 NZD
Retailer 13$3,181 NZD
Retailer 8$3,635 NZD
Retailer 15$4,028 NZD
Brilliant Earth$6,796 NZD

36 data points across 15 retailers

15 retailers$798 NZD to $6,796 NZD

A
Cheapest Retailer
-
$798 NZD
$450 USD
Retailer 2
-
$990 NZD
$558 USD
View
Price last confirmed 20 days ago
A
Retailer 3
-
$990 NZD
$558 USD
View
A
Retailer 4
-
$1,242 NZD
$700 USD
View
Retailer 5
-
$1,273 NZD
£565 GBP
View
Price last confirmed 15 days ago
B+
Retailer 6
-
$1,553 NZD
$875 USD
View
A
Retailer 7
-
$1,600 NZD
€859 EUR
View
A
Retailer 8
-
$1,618 NZD
£718 GBP
View
A
Retailer 9
-
$1,721 NZD
$970 USD
View
B+
Retailer 10
-
$2,152 NZD
$1,213 USD
View
B
Retailer 11
-
$2,660 NZD
$1,499 USD
View
B+
Retailer 12
-
$3,181 NZD
$1,793 USD
View
B
Retailer 13
-
$3,635 NZD
£1,613 GBP
View
Retailer 14
-
$4,028 NZD
$2,270 USD
View
Price last confirmed 11 days ago
Most Expensive
B
Brilliant Earth
12844998A · Oct 31
$6,796 NZD
$3,830 USD
View
14 more retailers have this diamond
Prices start from $798 NZDSave up to $5,997 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
4.00ct Round
$798 NZD