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Marquise|Lab Grown|IGI

5.09ct H VS2 Marquise Lab Grown Diamond

ID • H/VS2 • IGI LG843661437

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG843661437

Diamond specifications and retailer prices

From £827 GBP
$1,108 USD
As of November 1, 2026
Save £2,852 GBP (78%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £3,679 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 5.09ct lab-grown marquise diamond

This 5.09ct lab-grown marquise sits in the over five carat band, graded H colour (near-colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG843661437 or 843661437. Listed at 3 retailers as of October 31, 2026, with prices from £827 to £3,679, a £2,852 spread on the same certified stone. Brilliant Earth lists it at £3,679. 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

5.09
Carat
H
Colour
VS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG843661437
Dimensions17.19 × 9.03 × 5.72 mm
L/W Ratio1.90
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
17.19 mm9.03 mm5.09 ctH / VS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG843661437
Side View
Table 57.0%Crown 35.9°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 63.3%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 1
Current: £3,679 GBP|Low: £827 GBP|High: £3,679 GBP|Avg: £2,630 GBP
Brilliant Earth
Retailer 2
Retailer 3
November 1, 2026
Retailer 3£827 GBP
Retailer 2£2,335 GBP
Brilliant Earth£3,679 GBP

2 data points across 3 retailers

3 retailers£827 GBP to £3,679 GBP

B+
Cheapest Retailer
-
£827 GBP
$1,108 USD
B
Retailer 2
-
£2,335 GBP
View
Most Expensive
B
Brilliant Earth
22393987A · Oct 31
£3,679 GBP
$4,930 USD
View
2 more retailers have this diamond
Prices start from £827 GBPSave up to £2,852 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+
5.09ct Marquise
£827 GBP