Marquise|Lab Grown|IGI

1.25ct F VS2 Marquise Lab Grown Diamond

ID • F/VS2 • IGI LG843699129

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG843699129

Diamond specifications and retailer prices

From £235 GBP
$315 USD
As of November 1, 2026
Save £365 GBP (61%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £819 GBP at MOH London · As of October 21, 2026
View at MOH London

About this 1.25ct lab-grown marquise diamond

This 1.25ct lab-grown marquise sits in the one-and-a-quarter to one-and-a-half carat band, graded F colour (colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG843699129 or 843699129. Listed at 5 retailers as of October 31, 2026, with a 156% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.25
Carat
F
Colour
VS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.1°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG843699129
Dimensions11.22 × 5.81 × 3.44 mm
L/W Ratio1.93
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.22 mm5.81 mm1.25 ctF / VS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG843699129
Side View
Table 64.0%Crown 32.1°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 59.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: £819 GBP|Low: £235 GBP|High: £819 GBP|Avg: £457 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 2, 2026
Retailer 5£235 GBP
Retailer 2£313 GBP
Retailer 3£352 GBP
Retailer 4£600 GBP
MOH London£819 GBP

19 data points across 5 retailers

5 retailers£235 GBP to £600 GBP

B+
Cheapest Retailer
-
£235 GBP
$315 USD
A
Retailer 2
-
£313 GBP
View
A
Retailer 3
-
£352 GBP
$473 USD
View
B
Retailer 4
-
£600 GBP
$805 USD
View
Most Expensive
MOH London
LG843699129 · Oct 21
£819 GBP
View
Price last confirmed 12 days ago
4 more retailers have this diamond
Prices start from £235 GBPSave up to £365 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
1.25ct Marquise
£235 GBP