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Marquise|Lab Grown|IGI

3.09ct F VS1 Marquise Lab Grown Diamond

VG • F/VS1 • IGI LG838640610

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG838640610

Diamond specifications and retailer prices

From £340 GBP
As of November 4, 2026
Save £1,237 GBP (78%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £1,902 GBP at Rare Carat · As of October 28, 2026
View at Rare Carat

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 very-good cut grade and certified by IGI LG838640610 or 838640610. Listed at 19 retailers as of November 4, 2026, with a 364% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

3.09
Carat
F
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG838640610
Dimensions15.49 × 7.44 × 4.67 mm
L/W Ratio2.08
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
15.49 mm7.44 mm3.09 ctF / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG838640610
Side View
Table 61.0%Crown 34.1°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 62.8%

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: £1,902 GBP|Low: £336 GBP|High: £1,921 GBP|Avg: £888 GBP|-1.0%
Rare Carat
Retailer 2
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Retailer 11
Retailer 12
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Retailer 19
November 5, 2026
Retailer 19£340 GBP
Retailer 10£380 GBP
Retailer 5£421 GBP
Retailer 9£421 GBP
Retailer 14£479 GBP
Retailer 15£528 GBP
Retailer 6£660 GBP
Retailer 17£689 GBP
Retailer 2£690 GBP
Retailer 4£700 GBP
Retailer 13£890 GBP
Retailer 16£914 GBP
Retailer 18£917 GBP
Retailer 7£1,132 GBP
Retailer 3£1,354 GBP
Retailer 11£1,377 GBP
Retailer 12£1,542 GBP
Retailer 8£1,577 GBP
Rare Carat£1,902 GBP

34 data points across 19 retailers

19 retailers£340 GBP to £1,577 GBP

A
Cheapest Retailer
-
£340 GBP
A
Retailer 2
-
£380 GBP
View
Retailer 3
-
£421 GBP
View
Price last confirmed 20 days ago
A
Retailer 4
-
£421 GBP
View
A
Retailer 5
-
£479 GBP
View
A
Retailer 6
-
£528 GBP
View
B+
Retailer 7
-
£660 GBP
View
Retailer 8
-
£689 GBP
View
Price last confirmed 11 days ago
A
Retailer 9
-
£690 GBP
View
A
Retailer 10
-
£700 GBP
View
B+
Retailer 11
-
£890 GBP
View
A
Retailer 12
-
£914 GBP
View
B+
Retailer 13
-
£917 GBP
View
B+
Retailer 14
-
£1,132 GBP
View
B+
Retailer 15
-
£1,354 GBP
View
B+
Retailer 16
-
£1,377 GBP
View
B+
Retailer 17
-
£1,542 GBP
View
B+
Retailer 18
-
£1,577 GBP
View
Most Expensive
Rare Carat
L1-01-B_l_838640610 · Oct 28
£1,902 GBP
$2,560 USD
View
Price last confirmed 8 days ago
18 more retailers have this diamond
Prices start from £340 GBPSave up to £1,237 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
£340 GBP