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Marquise|Lab Grown|IGI

3.03ct F SI1 Marquise Lab Grown Diamond

VG • F/SI1 • IGI LG754564363

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG754564363

Diamond specifications and retailer prices

From £305 GBP
As of November 2, 2026
Save £1,720 GBP (85%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £2,025 GBP at Brilliant Earth · As of November 3, 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 LG754564363 or 754564363. Listed at 19 retailers as of November 2, 2026, with prices from £305 to £2,025, a £1,720 spread on the same certified stone. Brilliant Earth lists it at £2,025. 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
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle38.8°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754564363
Dimensions14.00 × 7.39 × 4.85 mm
L/W Ratio1.89
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
14.00 mm7.39 mm3.03 ctF / SI1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754564363
Side View
Table 57.0%Crown 38.8°Girdle: MED-STKPavilion 39.5°Culet: NoneDepth 65.6%

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 2
Current: £2,025 GBP|Low: £292 GBP|High: £2,025 GBP|Avg: £856 GBP
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 11£305 GBP
Retailer 3£377 GBP
Retailer 4£459 GBP
Retailer 8£486 GBP
Retailer 10£530 GBP
Retailer 2£586 GBP
Retailer 5£615 GBP
Retailer 7£1,059 GBP
Retailer 6£1,471 GBP
Retailer 9£1,547 GBP
Brilliant Earth£2,025 GBP

36 data points across 11 retailers

19 retailers£305 GBP to £2,025 GBP

A
Cheapest Retailer
-
£305 GBP
A
Retailer 2
-
£341 GBP
View
Retailer 3
-
£377 GBP
View
Price last confirmed 12 days ago
B+
Retailer 4
-
£377 GBP
View
A
Retailer 5
-
£459 GBP
View
A
Retailer 6
-
£486 GBP
View
B
Retailer 7
-
£530 GBP
View
A
Retailer 8
-
£586 GBP
View
A
Retailer 9
-
£615 GBP
View
B+
Retailer 10
-
£660 GBP
View
B+
Retailer 11
-
£767 GBP
View
B+
Retailer 12
-
£916 GBP
View
B+
Retailer 13
-
£1,059 GBP
View
B
Retailer 14
-
£1,199 GBP
View
B
Retailer 15
-
£1,214 GBP
View
B
Retailer 16
-
£1,239 GBP
View
B
Retailer 17
-
£1,471 GBP
View
Retailer 18
-
£1,547 GBP
View
Price last confirmed 9 days ago
Most Expensive
B
Brilliant Earth
18204568A · Nov 3
£2,025 GBP
$2,710 USD
View
18 more retailers have this diamond
Prices start from £305 GBPSave up to £1,720 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
£305 GBP