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Marquise|Lab Grown|IGI

3.09ct F VS1 Marquise Lab Grown Diamond

ID • F/VS1 • IGI LG844630978

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG844630978

Diamond specifications and retailer prices

From £350 GBP
As of November 4, 2026
Save £2,213 GBP (86%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £2,563 GBP at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 3.09ct lab-grown marquise diamond

This 3.09ct lab-grown marquise sits in the three to five carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG844630978 or 844630978. Listed at 19 retailers as of November 4, 2026, with prices from £350 to £2,563, a £2,213 spread on the same certified stone. Brilliant Earth lists it at £2,563. 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

3.09
Carat
F
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle39.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG844630978
Dimensions14.95 × 7.63 × 4.72 mm
L/W Ratio1.96
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
14.95 mm7.63 mm3.09 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG844630978
Side View
Table 63.0%Crown 35.9°Girdle: MED-STKPavilion 39.9°Culet: NoneDepth 61.9%

Caratlytics Score

How it works →
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: £2,563 GBP|Low: £350 GBP|High: £2,563 GBP|Avg: £1,078 GBP
Brilliant Earth
Retailer 2
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November 5, 2026
Retailer 17£350 GBP
Retailer 9£391 GBP
Retailer 18£392 GBP
Retailer 5£434 GBP
Retailer 13£494 GBP
Retailer 3£539 GBP
Retailer 19£678 GBP
Retailer 2£708 GBP
Retailer 4£711 GBP
Retailer 7£921 GBP
Retailer 16£942 GBP
Retailer 15£1,166 GBP
Retailer 6£1,395 GBP
Retailer 8£1,417 GBP
Retailer 14£1,472 GBP
Retailer 12£1,589 GBP
Retailer 11£1,615 GBP
Retailer 10£1,969 GBP
Brilliant Earth£2,563 GBP

7 data points across 19 retailers

19 retailers£350 GBP to £2,563 GBP

A
Cheapest Retailer
-
£350 GBP
A
Retailer 2
-
£391 GBP
View
Final sale: no returns
A
Retailer 3
-
£392 GBP
View
A
Retailer 4
-
£434 GBP
View
A
Retailer 5
-
£494 GBP
View
A
Retailer 6
-
£539 GBP
View
B+
Retailer 7
-
£678 GBP
View
A
Retailer 8
-
£708 GBP
View
A
Retailer 9
-
£711 GBP
View
A
Retailer 10
-
£921 GBP
View
A
Retailer 11
-
£942 GBP
View
B+
Retailer 12
-
£1,166 GBP
View
B+
Retailer 13
-
£1,395 GBP
View
B+
Retailer 14
-
£1,417 GBP
View
B+
Retailer 15
-
£1,472 GBP
View
B+
Retailer 16
-
£1,589 GBP
View
B+
Retailer 17
-
£1,615 GBP
View
B
Retailer 18
-
£1,969 GBP
View
Most Expensive
B
Brilliant Earth
22377923A · Nov 4
£2,563 GBP
$3,450 USD
View
18 more retailers have this diamond
Prices start from £350 GBPSave up to £2,213 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
3.09ct Marquise
£350 GBP