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Marquise|Lab Grown|IGI

3.31ct G VS1 Marquise Lab Grown Diamond

EX • G/VS1 • IGI LG845657227

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG845657227

Diamond specifications and retailer prices

From £324 GBP
$434 USD
As of November 1, 2026
Save £1,990 GBP (86%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £2,314 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 3.31ct lab-grown marquise diamond

This 3.31ct lab-grown marquise sits in the three to five carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG845657227 or 845657227. Listed at 4 retailers as of October 30, 2026, with prices from £324 to £2,314, a £1,990 spread on the same certified stone. Brilliant Earth lists it at £2,314. 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

3.31
Carat
G
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG845657227
Dimensions16.13 × 7.73 × 4.74 mm
L/W Ratio2.09
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
16.13 mm7.73 mm3.31 ctG / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG845657227
Side View
Table 58.0%Crown 35°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 61.3%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: £2,314 GBP|Low: £324 GBP|High: £2,314 GBP|Avg: £1,099 GBP
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
November 2, 2026
Retailer 3£324 GBP
Retailer 2£605 GBP
Retailer 4£2,000 GBP
Brilliant Earth£2,314 GBP

14 data points across 4 retailers

4 retailers£324 GBP to £2,314 GBP

A
Cheapest Retailer
-
£324 GBP
$434 USD
Final sale: no returns
A
Retailer 2
-
£605 GBP
View
B
Retailer 3
-
£2,000 GBP
$2,680 USD
View
Most Expensive
B
Brilliant Earth
22309145A · Oct 30
£2,314 GBP
$3,100 USD
View
3 more retailers have this diamond
Prices start from £324 GBPSave up to £1,990 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
3.31ct Marquise
£324 GBP