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Marquise|Lab Grown|IGI

3.03ct F SI1 Marquise Lab Grown Diamond

EX • F/SI1 • IGI LG844676294

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG844676294

Diamond specifications and retailer prices

From £281 GBP
As of November 6, 2026
Save £1,744 GBP (86%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £2,025 GBP at Brilliant Earth · As of November 6, 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 LG844676294 or 844676294. Listed at 4 retailers as of November 6, 2026, with prices from £281 to £2,025, a £1,744 spread on the same certified stone. Brilliant Earth lists it at £2,025. 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
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.7°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG844676294
Dimensions15.52 × 7.39 × 4.62 mm
L/W Ratio2.10
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
15.52 mm7.39 mm3.03 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG844676294
Side View
Table 61.0%Crown 34.7°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 62.5%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: £2,025 GBP|Low: £281 GBP|High: £2,025 GBP|Avg: £1,122 GBP
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
November 6, 2026
Retailer 3£281 GBP
Retailer 2£572 GBP
Retailer 4£1,558 GBP
Brilliant Earth£2,025 GBP

20 data points across 4 retailers

4 retailers£281 GBP to £2,025 GBP

A
Cheapest Retailer
-
£281 GBP
Final sale: no returns
A
Retailer 2
-
£572 GBP
View
Retailer 3
-
£1,558 GBP
View
Price last confirmed 9 days ago
Most Expensive
B
Brilliant Earth
22178118A · Nov 6
£2,025 GBP
$2,710 USD
View
3 more retailers have this diamond
Prices start from £281 GBPSave up to £1,744 GBP

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
£281 GBP