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Marquise|Lab Grown|IGI

1.55ct G VS1 Marquise Lab Grown Diamond

ID • G/VS1 • IGI LG823656054

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG823656054

Diamond specifications and retailer prices

From £307 GBP
$412 USD
As of November 1, 2026
Save £613 GBP (67%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £920 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.55ct lab-grown marquise diamond

This 1.55ct lab-grown marquise sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG823656054 or 823656054. Listed at 3 retailers as of October 29, 2026, with prices from £307 to £920, a £613 spread on the same certified stone. MOH London lists it at £920. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.55
Carat
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.6°
Pavilion angle42.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG823656054
Dimensions12.06 × 5.90 × 3.83 mm
L/W Ratio2.04
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.06 mm5.90 mm1.55 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG823656054
Side View
Table 58.0%Crown 31.6°Girdle: MED-STKPavilion 42.1°Culet: NoneDepth 64.9%

Caratlytics Score

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

Last verified: Nov 1
Current: £920 GBP|Low: £307 GBP|High: £927 GBP|Avg: £546 GBP|+0.5%
MOH London
Retailer 2
Retailer 3
October 29, 2026
Retailer 2£307 GBP
Retailer 3£393 GBP
MOH London£920 GBP

9 data points across 3 retailers

3 retailers£307 GBP to £920 GBP

B+
Cheapest Retailer
-
£307 GBP
$412 USD
A
Retailer 2
-
£393 GBP
$526 USD
View
Most Expensive
B
MOH London
LG823656054 · Oct 29
£920 GBP
View
2 more retailers have this diamond
Prices start from £307 GBPSave up to £613 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
1.55ct Marquise
£307 GBP