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Marquise|Lab Grown|IGI

3.31ct G VS1 Marquise Lab Grown Diamond

EX • G/VS1 • IGI LG755509033

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG755509033

Diamond specifications and retailer prices

From £481 GBP
$646 USD
As of November 1, 2026
Save £1,822 GBP (79%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £2,304 GBP at Frank Darling · As of October 28, 2026
View at Frank Darling

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 LG755509033 or 755509033. Listed at 6 retailers as of October 28, 2026, with prices from £481 to £2,304, a £1,822 spread on the same certified stone. Frank Darling lists it at £2,304. 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 angle34.6°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG755509033
Dimensions14.93 × 8.00 × 5.04 mm
L/W Ratio1.87
Girdle conditionFaceted
Culet sizePointed
Top View
14.93 mm8.00 mm3.31 ctG / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG755509033
Side View
Table 60.0%Crown 34.6°Girdle: MED-STKPavilion 41°Culet: NoneDepth 63.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £2,304 GBP|Low: £451 GBP|High: £4,158 GBP|Avg: £1,386 GBP
Frank Darling
Retailer 2
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October 31, 2026
Retailer 15£451 GBP
Retailer 9£481 GBP
Retailer 7£504 GBP
Retailer 13£674 GBP
Retailer 5£715 GBP
Retailer 11£899 GBP
Retailer 4£916 GBP
Retailer 14£1,067 GBP
Retailer 2£1,243 GBP
Retailer 3£1,323 GBP
Retailer 10£1,539 GBP
Retailer 8£1,990 GBP
Frank Darling£2,304 GBP
Retailer 6£2,437 GBP
Retailer 12£4,158 GBP

2 data points across 15 retailers

6 retailers£481 GBP to £2,304 GBP

B+
Cheapest Retailer
-
£481 GBP
$646 USD
B+
Retailer 2
-
£1,067 GBP
CA$1,988 CAD
View
B+
Retailer 3
-
£1,243 GBP
$1,668 USD
View
B+
Retailer 4
-
£1,539 GBP
$2,065 USD
View
B
Retailer 5
-
£1,990 GBP
$2,670 USD
View
Most Expensive
B
Frank Darling
100743325650KD · Oct 28
£2,304 GBP
$3,091 USD
View
5 more retailers have this diamond
Prices start from £481 GBPSave up to £1,822 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+
3.31ct Marquise
£481 GBP