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Marquise|Lab Grown|IGI

1.25ct F VS1 Marquise Lab Grown Diamond

ID • F/VS1 • IGI LG838649551

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG838649551

Diamond specifications and retailer prices

From £317 GBP
$426 USD
As of November 1, 2026
Save £537 GBP (63%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £855 GBP at MOH London · As of November 1, 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 VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG838649551 or 838649551. Listed at 6 retailers as of November 1, 2026, with prices from £317 to £855, a £537 spread on the same certified stone. MOH London lists it at £855. 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
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG838649551
Dimensions11.03 × 5.51 × 3.52 mm
L/W Ratio2.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.03 mm5.51 mm1.25 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG838649551
Side View
Table 63.0%Crown 35.4°Girdle: MED-THKPavilion 41.4°Culet: NoneDepth 63.9%

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 1
Current: £855 GBP|Low: £317 GBP|High: £859 GBP|Avg: £495 GBP|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 2, 2026
Retailer 6£317 GBP
Retailer 2£335 GBP
Retailer 4£346 GBP
Retailer 3£496 GBP
Retailer 5£628 GBP
MOH London£855 GBP

9 data points across 6 retailers

6 retailers£317 GBP to £855 GBP

A
Cheapest Retailer
-
£317 GBP
$426 USD
A
Retailer 2
-
£335 GBP
View
A
Retailer 3
-
£346 GBP
$464 USD
View
B+
Retailer 4
-
£496 GBP
$665 USD
View
B
Retailer 5
-
£628 GBP
$842 USD
View
Most Expensive
B
MOH London
LG838649551 · Nov 1
£855 GBP
View
5 more retailers have this diamond
Prices start from £317 GBPSave up to £537 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
£317 GBP