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Marquise|Lab Grown|IGI

3.03ct G SI1 Marquise Lab Grown Diamond

VG • G/SI1 • IGI LG842613319

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG842613319

Diamond specifications and retailer prices

From £279 GBP
As of November 4, 2026
Save £1,363 GBP (83%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £1,642 GBP at Brilliant Earth · As of November 4, 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG842613319 or 842613319. Listed at 3 retailers as of November 4, 2026, with prices from £279 to £1,642, a £1,363 spread on the same certified stone. Brilliant Earth lists it at £1,642. 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
G
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.1°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG842613319
Dimensions15.20 × 7.33 × 4.72 mm
L/W Ratio2.07
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
15.20 mm7.33 mm3.03 ctG / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG842613319
Side View
Table 62.0%Crown 37.1°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 64.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: £1,642 GBP|Low: £279 GBP|High: £1,642 GBP|Avg: £630 GBP
Brilliant Earth
Retailer 2
Retailer 3
November 5, 2026
Retailer 3£279 GBP
Retailer 2£571 GBP
Brilliant Earth£1,642 GBP

28 data points across 3 retailers

3 retailers£279 GBP to £1,642 GBP

A
Cheapest Retailer
-
£279 GBP
Final sale: no returns
A
Retailer 2
-
£571 GBP
View
Most Expensive
B
Brilliant Earth
21714926A · Nov 4
£1,642 GBP
$2,210 USD
View
2 more retailers have this diamond
Prices start from £279 GBPSave up to £1,363 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
£279 GBP