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Marquise|Lab Grown|IGI

3.50ct F VS2 Marquise Lab Grown Diamond

EX • F/VS2 • IGI LG734532559

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG734532559

Diamond specifications and retailer prices

From £1,374 GBP
CA$2,561 CAD
As of October 30, 2026
Save £608 GBP (31%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £1,982 GBP at The Diamond Guys · As of November 1, 2026
View at The Diamond Guys

About this 3.5ct lab-grown marquise diamond

This 3.5ct lab-grown marquise sits in the three to five carat band, graded F colour (colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG734532559 or 734532559. Listed at 2 retailers as of October 30, 2026, with prices from £1,374 to £1,982, a £608 spread on the same certified stone. The Diamond Guys lists it at £1,982. 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

3.50
Carat
F
Colour
VS2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG734532559
Dimensions15.56 × 7.77 × 5.03 mm
L/W Ratio2.00
Girdle conditionFaceted
Culet sizePointed
Top View
15.56 mm7.77 mm3.50 ctF / VS2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG734532559
Side View
Table 59.0%Crown 35.6°Girdle: STK-THKPavilion 40.8°Culet: NoneDepth 64.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 30
Current: £1,374 GBP|Low: £532 GBP|High: £5,023 GBP|Avg: £1,971 GBP|-14.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
The Diamond Guys
August 3, 2026
Retailer 2£532 GBP
Retailer 3£750 GBP
Retailer 5£842 GBP
Retailer 8£913 GBP
Retailer 7£1,322 GBP
Retailer 1£1,374 GBP
Retailer 4£1,454 GBP
Retailer 6£1,702 GBP
The Diamond Guys£1,982 GBP

67 data points across 9 retailers

2 retailers£1,374 GBP to £1,982 GBP

B+
Cheapest Retailer
-
£1,374 GBP
CA$2,561 CAD
Most Expensive
B
The Diamond Guys
1873544233 · Nov 1
£1,982 GBP
$2,660 USD
View
1 more retailer has this diamond
Prices start from £1,374 GBPSave up to £608 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+
3.50ct Marquise
£1,374 GBP