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Marquise|Lab Grown|IGI

4.30ct E SI1 Marquise Lab Grown Diamond

ID • E/SI1 • IGI LG833606493

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG833606493

Diamond specifications and retailer prices

From $774 AUD
$544 USD
As of October 30, 2026
Save $5,689 AUD (88%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $6,463 AUD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 4.3ct lab-grown marquise diamond

This 4.3ct lab-grown marquise 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 LG833606493 or 833606493. Listed at 10 retailers as of October 30, 2026, with prices from $774 to $6,463, a $5,689 spread on the same certified stone. Brilliant Earth lists it at $6,463. 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

4.30
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG833606493
Dimensions16.61 × 8.50 × 5.37 mm
L/W Ratio1.95
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
16.61 mm8.50 mm4.30 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG833606493
Side View
Table 60.0%Crown 35.4°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 63.2%

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 30
Current: $6,463 AUD|Low: $767 AUD|High: $9,524 AUD|Avg: $3,155 AUD|-32.1%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 8$774 AUD
Retailer 2$804 AUD
Retailer 7$867 AUD
Retailer 4$1,453 AUD
Retailer 6$2,478 AUD
Retailer 5$2,484 AUD
Retailer 10$2,525 AUD
Retailer 9$3,866 AUD
Retailer 3$4,014 AUD
Brilliant Earth$6,463 AUD

28 data points across 10 retailers

10 retailers$774 AUD to $6,463 AUD

A
Cheapest Retailer
-
$774 AUD
$544 USD
A
Retailer 2
-
$804 AUD
£445 GBP
View
A
Retailer 3
-
$867 AUD
$609 USD
View
A
Retailer 4
-
$1,453 AUD
€972 EUR
View
B+
Retailer 5
-
$2,478 AUD
$1,741 USD
View
B+
Retailer 6
-
$2,484 AUD
$1,745 USD
View
B+
Retailer 7
-
$2,525 AUD
$1,774 USD
View
Retailer 8
-
$3,866 AUD
SGD 3,670 SGD
View
Price last confirmed 18 days ago
B
Retailer 9
-
$4,014 AUD
£2,220 GBP
View
Most Expensive
B
Brilliant Earth
21148210A · Oct 30
$6,463 AUD
$4,540 USD
View
9 more retailers have this diamond
Prices start from $774 AUDSave up to $5,689 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
4.30ct Marquise
$774 AUD