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Marquise|Lab Grown|IGI

3.03ct F SI1 Marquise Lab Grown Diamond

EX • F/SI1 • IGI LG842648556

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG842648556

Diamond specifications and retailer prices

From $371 USD
As of November 1, 2026
Save $2,339 USD (86%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $2,710 USD at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 3.03ct lab-grown marquise diamond

This 3.03ct 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 LG842648556 or 842648556. Listed at 3 retailers as of November 1, 2026, with prices from $371 to $2,710, a $2,339 spread on the same certified stone. Brilliant Earth lists it at $2,710. 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

3.03
Carat
F
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG842648556
Dimensions14.46 × 7.62 × 4.84 mm
L/W Ratio1.90
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
14.46 mm7.62 mm3.03 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG842648556
Side View
Table 59.0%Crown 34.3°Girdle: MED-THKPavilion 40.7°Culet: NoneDepth 63.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: $2,710 USD|Low: $371 USD|High: $2,710 USD|Avg: $1,468 USD
Brilliant Earth
Retailer 2
Retailer 3
November 2, 2026
Retailer 3$371 USD
Retailer 2$766 USD
Brilliant Earth$2,710 USD

23 data points across 3 retailers

3 retailers$371 USD to $2,710 USD

A
Cheapest Retailer
-
$371 USD
Final sale: no returns
A
Retailer 2
-
$766 USD
£603 GBP
View
Most Expensive
B
Brilliant Earth
21744000A · Nov 2
$2,710 USD
View
2 more retailers have this diamond
Prices start from $371 USDSave up to $2,339 USD

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
3.03ct Marquise
$371 USD