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Marquise|Lab Grown|IGI

3.03ct G VS1 Marquise Lab Grown Diamond

EX • G/VS1 • IGI LG754542849

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG754542849

Diamond specifications and retailer prices

From £326 GBP
As of November 4, 2026
Save £1,185 GBP (78%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £1,511 GBP at Brilliance · As of November 3, 2026
View at Brilliance

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 top-tier cut grade and certified by IGI LG754542849 or 754542849. Listed at 16 retailers as of November 3, 2026, with prices from £326 to £1,511, a £1,185 spread on the same certified stone. Brilliance lists it at £1,511. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

3.03
Carat
G
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.1°
Pavilion angle39.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754542849
Dimensions15.60 × 7.52 × 4.50 mm
L/W Ratio2.07
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
15.60 mm7.52 mm3.03 ctG / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754542849
Side View
Table 59.0%Crown 32.1°Girdle: MED-STKPavilion 39.8°Culet: NoneDepth 59.8%

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: £1,511 GBP|Low: £313 GBP|High: £1,511 GBP|Avg: £791 GBP
Brilliance
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
November 5, 2026
Retailer 13£326 GBP
Retailer 4£364 GBP
Retailer 5£404 GBP
Retailer 14£404 GBP
Retailer 10£511 GBP
Retailer 12£542 GBP
Retailer 2£661 GBP
Retailer 6£681 GBP
Retailer 7£854 GBP
Retailer 8£879 GBP
Retailer 11£1,085 GBP
Retailer 3£1,299 GBP
Retailer 9£1,483 GBP
Brilliance£1,511 GBP

45 data points across 14 retailers

16 retailers£326 GBP to £1,511 GBP

A
Cheapest Retailer
-
£326 GBP
A
Retailer 2
-
£364 GBP
View
Retailer 3
-
£404 GBP
View
Price last confirmed 11 days ago
A
Retailer 4
-
£404 GBP
View
A
Retailer 5
-
£511 GBP
View
B+
Retailer 6
-
£542 GBP
View
A
Retailer 7
-
£661 GBP
View
A
Retailer 8
-
£681 GBP
View
A
Retailer 9
-
£776 GBP
View
A
Retailer 10
-
£854 GBP
View
A
Retailer 11
-
£879 GBP
View
B+
Retailer 12
-
£1,085 GBP
View
B+
Retailer 13
-
£1,299 GBP
View
B+
Retailer 14
-
£1,322 GBP
View
B+
Retailer 15
-
£1,483 GBP
View
Most Expensive
B+
Brilliance
D36710686 · Nov 3
£1,511 GBP
$2,040 USD
View
15 more retailers have this diamond
Prices start from £326 GBPSave up to £1,185 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
£326 GBP