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Marquise|Lab Grown|IGI

6.09ct F VS1 Marquise Lab Grown Diamond

ID • F/VS1 • IGI LG717578690

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG717578690

Diamond specifications and retailer prices

From £1,686 GBP
CA$3,142 CAD
As of November 2, 2026
Save £747 GBP (31%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £2,432 GBP at The Diamond Guys · As of November 1, 2026
View at The Diamond Guys

About this 6.09ct lab-grown marquise diamond

This 6.09ct lab-grown marquise sits in the over five carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG717578690 or 717578690. Listed at 2 retailers as of November 1, 2026, with prices from £1,686 to £2,432, a £747 spread on the same certified stone. The Diamond Guys lists it at £2,432. 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

6.09
Carat
F
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG717578690
Dimensions18.97 × 9.44 mm
L/W Ratio2.01
Girdle conditionFaceted
Culet sizePointed
Top View
18.97 mm9.44 mm6.09 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG717578690
Side View
Table 62.0%Crown 34.9°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 62.5%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 2
Current: £858 GBP|Low: £610 GBP|High: £4,188 GBP|Avg: £1,887 GBP|-14.9%
Retailer 1
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Retailer 3
Retailer 4
Retailer 5
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Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
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Retailer 14
The Diamond Guys
September 16, 2026
Retailer 8£610 GBP
Retailer 1£858 GBP
Retailer 5£866 GBP
Retailer 3£958 GBP
Retailer 2£971 GBP
Retailer 14£1,221 GBP
Retailer 7£1,403 GBP
Retailer 12£1,610 GBP
Retailer 13£1,686 GBP
Retailer 10£1,902 GBP
Retailer 6£2,044 GBP
The Diamond Guys£2,432 GBP
Retailer 4£3,213 GBP
Retailer 9£3,607 GBP
Retailer 11£3,985 GBP

56 data points across 15 retailers

2 retailers£1,686 GBP to £2,432 GBP

B+
Cheapest Retailer
-
£1,686 GBP
CA$3,142 CAD
Most Expensive
B
The Diamond Guys
1954435164 · Nov 1
£2,432 GBP
$3,264 USD
View
1 more retailer has this diamond
Prices start from £1,686 GBPSave up to £747 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.

B+
6.09ct Marquise
£1,686 GBP