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Marquise|Lab Grown|IGI

1.55ct E IF Marquise Lab Grown Diamond

ID • E/IF • IGI LG815641571

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG815641571

Diamond specifications and retailer prices

From £605 GBP
$811 USD
As of October 30, 2026
Save £973 GBP (62%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £1,578 GBP at MOH London · As of October 25, 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 E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG815641571 or 815641571. Listed at 2 retailers as of October 25, 2026, with prices from £605 to £1,578, a £973 spread on the same certified stone. MOH London lists it at £1,578. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.55
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.2°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG815641571
Dimensions11.76 × 6.04 × 3.77 mm
L/W Ratio1.95
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.76 mm6.04 mm1.55 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG815641571
Side View
Table 62.0%Crown 36.2°Girdle: MED-STKPavilion 40°Culet: NoneDepth 62.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: £1,578 GBP|Low: £605 GBP|High: £2,560 GBP|Avg: £1,341 GBP|-37.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 28, 2026
Retailer 2£605 GBP
Retailer 5£639 GBP
Retailer 6£792 GBP
Retailer 4£1,068 GBP
MOH London£1,578 GBP
Retailer 3£2,560 GBP

12 data points across 6 retailers

2 retailers£605 GBP to £1,578 GBP

A
Cheapest Retailer
-
£605 GBP
$811 USD
Most Expensive
B+
MOH London
LG815641571 · Oct 25
£1,578 GBP
View
1 more retailer has this diamond
Prices start from £605 GBPSave up to £973 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
£605 GBP