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Marquise|Lab Grown|IGI

1.45ct G VS1 Marquise Lab Grown Diamond

ID • G/VS1 • IGI LG843627406

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG843627406

Diamond specifications and retailer prices

From £142 GBP
As of November 2, 2026
Save £506 GBP (78%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £827 GBP at MOH London · As of October 25, 2026
View at MOH London

About this 1.45ct lab-grown marquise diamond

This 1.45ct lab-grown marquise sits in the one-and-a-quarter to one-and-a-half carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG843627406 or 843627406. Listed at 11 retailers as of November 1, 2026, with a 356% 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

1.45
Carat
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.1°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG843627406
Dimensions11.38 × 5.96 × 3.73 mm
L/W Ratio1.91
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.38 mm5.96 mm1.45 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG843627406
Side View
Table 61.0%Crown 37.1°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 62.6%

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 2
Current: £827 GBP|Low: £142 GBP|High: £831 GBP|Avg: £466 GBP|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 8£142 GBP
Retailer 7£165 GBP
Retailer 4£216 GBP
Retailer 9£301 GBP
Retailer 11£421 GBP
Retailer 2£430 GBP
Retailer 6£568 GBP
Retailer 5£570 GBP
Retailer 3£619 GBP
Retailer 10£648 GBP
MOH London£827 GBP

13 data points across 11 retailers

11 retailers£142 GBP to £648 GBP

A
Cheapest Retailer
-
£142 GBP
A
Retailer 2
-
£165 GBP
View
A
Retailer 3
-
£216 GBP
View
Retailer 4
-
£301 GBP
View
Price last confirmed 11 days ago
A
Retailer 5
-
£421 GBP
View
A
Retailer 6
-
£430 GBP
View
B+
Retailer 7
-
£568 GBP
View
B+
Retailer 8
-
£570 GBP
View
B+
Retailer 9
-
£619 GBP
View
B+
Retailer 10
-
£648 GBP
View
Most Expensive
MOH London
LG843627406 · Oct 25
£827 GBP
View
Price last confirmed 10 days ago
10 more retailers have this diamond
Prices start from £142 GBPSave up to £506 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
1.45ct Marquise
£142 GBP