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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 $1,246 AUD
$875 USD
As of October 29, 2026
Save $4,207 AUD (77%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $5,452 AUD at Brilliant Earth · As of October 29, 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 12 retailers as of October 29, 2026, with prices from $1,246 to $5,452, a $4,207 spread on the same certified stone. Brilliant Earth lists it at $5,452. 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: Oct 29
Current: $5,452 AUD|Low: $794 AUD|High: $6,136 AUD|Avg: $2,075 AUD|-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
October 30, 2026
Retailer 11$794 AUD
Retailer 10$1,021 AUD
Retailer 7$1,246 AUD
Retailer 12$1,246 AUD
Retailer 6$1,289 AUD
Retailer 2$1,309 AUD
Retailer 3$1,381 AUD
Retailer 4$1,727 AUD
Retailer 8$2,134 AUD
Retailer 5$2,933 AUD
Retailer 9$3,232 AUD
Brilliant Earth$5,452 AUD

35 data points across 12 retailers

12 retailers$1,246 AUD to $5,452 AUD

Retailer 1
-
$794 AUD
$558 USD
Price last confirmed 18 days ago
Retailer 2
-
$1,021 AUD
£565 GBP
View
Price last confirmed 13 days ago
B+
Retailer 3
-
$1,246 AUD
$875 USD
View
B+
Retailer 4
-
$1,246 AUD
$875 USD
View
A
Retailer 5
-
$1,289 AUD
€862 EUR
View
A
Retailer 6
-
$1,309 AUD
£724 GBP
View
A
Retailer 7
-
$1,381 AUD
$970 USD
View
B+
Retailer 8
-
$1,727 AUD
$1,213 USD
View
B+
Retailer 9
-
$2,134 AUD
$1,499 USD
View
B
Retailer 10
-
$2,933 AUD
£1,622 GBP
View
Retailer 11
-
$3,232 AUD
$2,270 USD
View
Price last confirmed 9 days ago
Most Expensive
B
Brilliant Earth
12844998A · Oct 29
$5,452 AUD
$3,830 USD
View
11 more retailers have this diamond
Prices start from $1,246 AUDSave up to $4,207 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
4.00ct Round
$1,246 AUD