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Marquise|Lab Grown|IGI

3.11ct I VS1 Marquise Lab Grown Diamond

EX • I/VS1 • IGI LG846648111

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG846648111

Diamond specifications and retailer prices

From £740 GBP
€944 EUR
As of October 25, 2026
Save £1,739 GBP (70%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £2,479 GBP at MOH London · As of October 26, 2026
View at MOH London

About this 3.11ct lab-grown marquise diamond

This 3.11ct lab-grown marquise sits in the three to five carat band, graded I colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG846648111 or 846648111. Listed at 7 retailers as of October 25, 2026, with prices from £740 to £2,479, a £1,739 spread on the same certified stone. MOH London lists it at £2,479. 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

3.11
Carat
I
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG846648111
Dimensions14.87 × 7.68 × 4.85 mm
L/W Ratio1.94
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
14.87 mm7.68 mm3.11 ctI / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG846648111
Side View
Table 59.0%Crown 35.8°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 63.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 25
Current: £2,479 GBP|Low: £740 GBP|High: £2,590 GBP|Avg: £1,488 GBP|+19.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 31, 2026
Retailer 7£740 GBP
Retailer 6£837 GBP
Retailer 2£944 GBP
Retailer 4£1,642 GBP
Retailer 3£1,687 GBP
Retailer 5£2,026 GBP
MOH London£2,479 GBP

6 data points across 7 retailers

7 retailers£740 GBP to £2,479 GBP

A
Cheapest Retailer
-
£740 GBP
€944 EUR
A
Retailer 2
-
£837 GBP
$1,122 USD
View
A
Retailer 3
-
£944 GBP
$1,265 USD
View
B+
Retailer 4
-
£1,642 GBP
$2,200 USD
View
B+
Retailer 5
-
£1,687 GBP
$2,260 USD
View
B
Retailer 6
-
£2,026 GBP
$2,715 USD
View
Most Expensive
B
MOH London
LG846648111 · Oct 26
£2,479 GBP
View
6 more retailers have this diamond
Prices start from £740 GBPSave up to £1,739 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
3.11ct Marquise
£740 GBP