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Marquise|Lab Grown|IGI

1.24ct F VS1 Marquise Lab Grown Diamond

VG • F/VS1 • IGI LG844638668

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG844638668

Diamond specifications and retailer prices

From £326 GBP
As of November 4, 2026
Save £321 GBP (50%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £888 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.24ct lab-grown marquise diamond

This 1.24ct lab-grown marquise sits in the classic one-carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG844638668 or 844638668. Listed at 6 retailers as of November 4, 2026, with a 98% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.24
Carat
F
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.7°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG844638668
Dimensions11.52 × 5.61 × 3.42 mm
L/W Ratio2.05
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.52 mm5.61 mm1.24 ctF / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG844638668
Side View
Table 60.0%Crown 31.7°Girdle: MED-STKPavilion 40.1°Culet: NoneDepth 61.0%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: £888 GBP|Low: £326 GBP|High: £897 GBP|Avg: £494 GBP|-1.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 4, 2026
Retailer 6£326 GBP
Retailer 2£344 GBP
Retailer 3£344 GBP
Retailer 4£428 GBP
Retailer 5£647 GBP
MOH London£888 GBP

21 data points across 6 retailers

6 retailers£326 GBP to £647 GBP

A
Cheapest Retailer
-
£326 GBP
A
Retailer 2
-
£344 GBP
View
A
Retailer 3
-
£344 GBP
View
B+
Retailer 4
-
£428 GBP
View
B
Retailer 5
-
£647 GBP
View
Most Expensive
MOH London
LG844638668 · Oct 29
£888 GBP
View
Price last confirmed 8 days ago
5 more retailers have this diamond
Prices start from £326 GBPSave up to £321 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
1.24ct Marquise
£326 GBP