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Marquise|Lab Grown|IGI

3.03ct G VS1 Marquise Lab Grown Diamond

VG • G/VS1 • IGI LG618437511

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG618437511

Diamond specifications and retailer prices

From £295 GBP
As of November 4, 2026
Save £1,131 GBP (79%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £1,426 GBP at MOH London · As of November 5, 2026
View at MOH London

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 VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG618437511 or 618437511. Listed at 17 retailers as of November 4, 2026, with prices from £295 to £1,426, a £1,131 spread on the same certified stone. MOH London lists it at £1,426. 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
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle39.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG618437511
Dimensions15.34 × 7.79 × 4.54 mm
L/W Ratio1.97
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
15.34 mm7.79 mm3.03 ctG / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG618437511
Side View
Table 61.0%Crown 35.2°Girdle: MED-STKPavilion 39.3°Culet: NoneDepth 58.3%

Caratlytics Score

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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 4
Current: £1,426 GBP|Low: £284 GBP|High: £1,447 GBP|Avg: £732 GBP|-0.3%
MOH London
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 5, 2026
Retailer 14£295 GBP
Retailer 7£330 GBP
Retailer 6£366 GBP
Retailer 16£366 GBP
Retailer 12£409 GBP
Retailer 11£474 GBP
Retailer 5£581 GBP
Retailer 8£591 GBP
Retailer 2£595 GBP
Retailer 9£774 GBP
Retailer 10£797 GBP
Retailer 13£1,027 GBP
Retailer 15£1,072 GBP
Retailer 4£1,176 GBP
Retailer 3£1,370 GBP
MOH London£1,426 GBP

44 data points across 16 retailers

17 retailers£295 GBP to £1,426 GBP

A
Cheapest Retailer
-
£295 GBP
A
Retailer 2
-
£330 GBP
View
A
Retailer 3
-
£330 GBP
View
Final sale: no returns
Retailer 4
-
£366 GBP
View
Price last confirmed 11 days ago
A
Retailer 5
-
£366 GBP
View
A
Retailer 6
-
£474 GBP
View
B+
Retailer 7
-
£581 GBP
View
A
Retailer 8
-
£591 GBP
View
A
Retailer 9
-
£595 GBP
View
B+
Retailer 10
-
£764 GBP
View
A
Retailer 11
-
£774 GBP
View
A
Retailer 12
-
£797 GBP
View
B+
Retailer 13
-
£1,027 GBP
View
B+
Retailer 14
-
£1,176 GBP
View
B+
Retailer 15
-
£1,203 GBP
View
B
Retailer 16
-
£1,370 GBP
View
Most Expensive
B+
MOH London
LG618437511 · Nov 5
£1,426 GBP
View
16 more retailers have this diamond
Prices start from £295 GBPSave up to £1,131 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
£295 GBP