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Marquise|Lab Grown|IGI

4.05ct F SI1 Marquise Lab Grown Diamond

ID • F/SI1 • IGI LG650475156

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG650475156

Diamond specifications and retailer prices

From $731 AUD
$512 USD
As of November 2, 2026
Save $3,051 AUD (81%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $3,782 AUD at MOH London · As of November 1, 2026
View at MOH London

About this 4.05ct lab-grown marquise diamond

This 4.05ct lab-grown marquise sits in the three to five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG650475156 or 650475156. Listed at 14 retailers as of November 1, 2026, with prices from $731 to $3,782, a $3,051 spread on the same certified stone. MOH London lists it at $3,782. 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

4.05
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG650475156
Dimensions16.73 × 8.25 × 5.23 mm
L/W Ratio2.03
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
16.73 mm8.25 mm4.05 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG650475156
Side View
Table 59.0%Crown 36.5°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 63.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $3,782 AUD|Low: $731 AUD|High: $7,309 AUD|Avg: $2,306 AUD|-0.6%
MOH London
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
Retailer 17
November 2, 2026
Retailer 12$731 AUD
Retailer 2$782 AUD
Retailer 5$819 AUD
Retailer 13$906 AUD
Retailer 16$1,005 AUD
Retailer 14$1,106 AUD
Retailer 15$1,380 AUD
Retailer 10$1,403 AUD
Retailer 4$1,407 AUD
Retailer 3$1,665 AUD
Retailer 7$1,921 AUD
Retailer 11$2,339 AUD
Retailer 17$2,383 AUD
Retailer 6$3,724 AUD
MOH London$3,782 AUD
Retailer 8$5,693 AUD
Retailer 9$7,309 AUD

6 data points across 17 retailers

14 retailers$731 AUD to $3,782 AUD

A
Cheapest Retailer
-
$731 AUD
$512 USD
A
Retailer 2
-
$782 AUD
£431 GBP
View
A
Retailer 3
-
$819 AUD
$574 USD
View
A
Retailer 4
-
$906 AUD
$635 USD
View
A
Retailer 5
-
$1,005 AUD
HK$5,500 HKD
View
A
Retailer 6
-
$1,106 AUD
$775 USD
View
A
Retailer 7
-
$1,380 AUD
$967 USD
View
A
Retailer 8
-
$1,403 AUD
£774 GBP
View
B+
Retailer 9
-
$1,407 AUD
$986 USD
View
B+
Retailer 10
-
$1,665 AUD
$1,167 USD
View
B+
Retailer 11
-
$2,339 AUD
$1,639 USD
View
B
Retailer 12
-
$2,383 AUD
$1,670 USD
View
B
Retailer 13
-
$3,724 AUD
$2,610 USD
View
Most Expensive
B
MOH London
LG650475156 · Nov 1
$3,782 AUD
£2,087 GBP
View
13 more retailers have this diamond
Prices start from $731 AUDSave up to $3,051 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
4.05ct Marquise
$731 AUD