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Marquise|Lab Grown|IGI

3.03ct F SI1 Marquise Lab Grown Diamond

VG • F/SI1 • IGI LG840651032

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG840651032

Diamond specifications and retailer prices

From $371 USD
As of November 1, 2026
Save $2,349 USD (86%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $2,720 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 very-good cut grade and certified by IGI LG840651032 or 840651032. Listed at 3 retailers as of November 1, 2026, with prices from $371 to $2,720, a $2,349 spread on the same certified stone. Brilliant Earth lists it at $2,720. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

3.03
Carat
F
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840651032
Dimensions15.37 × 7.54 × 4.63 mm
L/W Ratio2.04
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
15.37 mm7.54 mm3.03 ctF / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840651032
Side View
Table 60.0%Crown 34.5°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 61.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: $2,720 USD|Low: $371 USD|High: $4,510 USD|Avg: $1,990 USD|-39.7%
Brilliant Earth
Retailer 2
Retailer 3
November 2, 2026
Retailer 3$371 USD
Retailer 2$766 USD
Brilliant Earth$2,720 USD

28 data points across 3 retailers

3 retailers$371 USD to $2,720 USD

A
Cheapest Retailer
-
$371 USD
Final sale: no returns
A
Retailer 2
-
$766 USD
£603 GBP
View
Most Expensive
B
Brilliant Earth
21612582A · Nov 2
$2,720 USD
View
2 more retailers have this diamond
Prices start from $371 USDSave up to $2,349 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