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Marquise|Lab Grown|IGI

4.02ct F SI1 Marquise Lab Grown Diamond

EX • F/SI1 • IGI LG754510285

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG754510285

Diamond specifications and retailer prices

From $809 AUD
$567 USD
As of November 1, 2026
Save $3,971 AUD (83%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $4,780 AUD at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 4.02ct lab-grown marquise diamond

This 4.02ct 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 LG754510285 or 754510285. Listed at 17 retailers as of November 1, 2026, with prices from $809 to $4,780, a $3,971 spread on the same certified stone. Brilliant Earth lists it at $4,780. 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

4.02
Carat
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.9°
Pavilion angle39.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754510285
Dimensions16.96 × 7.92 × 5.07 mm
L/W Ratio2.14
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
16.96 mm7.92 mm4.02 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754510285
Side View
Table 61.0%Crown 39.9°Girdle: MED-THKPavilion 39.2°Culet: NoneDepth 64.0%

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 1
Current: $4,780 AUD|Low: $705 AUD|High: $8,533 AUD|Avg: $2,064 AUD|-44.0%
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 2, 2026
Retailer 6$759 AUD
Retailer 14$809 AUD
Retailer 5$849 AUD
Retailer 8$940 AUD
Retailer 11$1,092 AUD
Retailer 15$1,206 AUD
Retailer 12$1,357 AUD
Retailer 9$1,483 AUD
Retailer 4$1,491 AUD
Retailer 13$1,644 AUD
Retailer 2$2,120 AUD
Retailer 7$2,474 AUD
Retailer 3$2,922 AUD
Retailer 16$2,958 AUD
Retailer 10$3,748 AUD
Brilliant Earth$4,780 AUD

40 data points across 16 retailers

17 retailers$809 AUD to $4,780 AUD

Retailer 1
-
$759 AUD
$532 USD
Price last confirmed 12 days ago
A
Retailer 2
-
$809 AUD
$567 USD
View
Final sale: no returns
Retailer 3
-
$849 AUD
$595 USD
View
Price last confirmed 12 days ago
Retailer 4
-
$940 AUD
$659 USD
View
Price last confirmed 17 days ago
Retailer 5
-
$940 AUD
$659 USD
View
Price last confirmed 11 days ago
A
Retailer 6
-
$1,092 AUD
$765 USD
View
B+
Retailer 7
-
$1,206 AUD
$845 USD
View
A
Retailer 8
-
$1,357 AUD
$951 USD
View
A
Retailer 9
-
$1,483 AUD
£818 GBP
View
B+
Retailer 10
-
$1,491 AUD
€995 EUR
View
A
Retailer 11
-
$1,644 AUD
$1,152 USD
View
B+
Retailer 12
-
$2,120 AUD
$1,486 USD
View
Retailer 13
-
$2,474 AUD
$1,734 USD
View
Price last confirmed 11 days ago
B
Retailer 14
-
$2,922 AUD
$2,048 USD
View
B
Retailer 15
-
$2,958 AUD
$2,073 USD
View
B
Retailer 16
-
$3,748 AUD
£2,068 GBP
View
Most Expensive
B
Brilliant Earth
18434020A · Nov 2
$4,780 AUD
$3,350 USD
View
16 more retailers have this diamond
Prices start from $809 AUDSave up to $3,971 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
4.02ct Marquise
$809 AUD