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Marquise|Lab Grown|IGI

3.91ct G VVS2 Marquise Lab Grown Diamond

EX • G/VVS2 • IGI LG812650095

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG812650095

Diamond specifications and retailer prices

From £398 GBP
$533 USD
As of October 31, 2026
Save £359 GBP (47%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £2,280 GBP at Rare Carat · As of October 18, 2026
View at Rare Carat

About this 3.91ct lab-grown marquise diamond

This 3.91ct lab-grown marquise sits in the three to five carat band, graded G colour (near-colourless) and VVS2 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG812650095 or 812650095. Listed at 3 retailers as of October 28, 2026, with a 90% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

3.91
Carat
G
Colour
VVS2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.6°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG812650095
Dimensions16.61 × 7.91 × 5.09 mm
L/W Ratio2.10
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
16.61 mm7.91 mm3.91 ctG / VVS2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG812650095
Side View
Table 60.0%Crown 37.6°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 64.3%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 31
Current: £2,280 GBP|Low: £393 GBP|High: £2,306 GBP|Avg: £1,218 GBP|-1.0%
Rare Carat
Retailer 2
Retailer 3
October 28, 2026
Retailer 3£398 GBP
Retailer 2£757 GBP
Rare Carat£2,280 GBP

32 data points across 3 retailers

3 retailers£398 GBP to £757 GBP

A
Cheapest Retailer
-
£398 GBP
$533 USD
Final sale: no returns
A
Retailer 2
-
£757 GBP
View
Most Expensive
Rare Carat
812650095 · Oct 18
£2,280 GBP
$3,055 USD
View
Price last confirmed 14 days ago
2 more retailers have this diamond
Prices start from £398 GBPSave up to £359 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
3.91ct Marquise
£398 GBP