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Marquise|Lab Grown|IGI

4.01ct E IF Marquise Lab Grown Diamond

ID • E/IF • IGI LG655411954

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG655411954

Diamond specifications and retailer prices

From £10,411 GBP
$13,950 USD
As of October 30, 2026
1 retailer carries this diamond
Only listing: £10,411 GBP at Brilliant Earth
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Brilliant Earth

About this 4.01ct lab-grown marquise diamond

This 4.01ct lab-grown marquise sits in the three to five carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG655411954 or 655411954. Listed at a single retailer as of October 30, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

4.01
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.8°
Pavilion angle37.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG655411954
Dimensions15.67 × 8.21 × 5.11 mm
L/W Ratio1.91
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
15.67 mm8.21 mm4.01 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG655411954
Side View
Table 56.0%Crown 38.8°Girdle: STK-THKPavilion 37.1°Culet: NoneDepth 62.2%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 30
Current: £10,411 GBP|Low: £3,839 GBP|High: £23,157 GBP|Avg: £10,643 GBP|-7.9%
Brilliant Earth
Retailer 2
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October 24, 2026
Retailer 2£3,839 GBP
Retailer 3£5,995 GBP
Retailer 12£6,091 GBP
Retailer 10£6,094 GBP
Retailer 11£6,391 GBP
Retailer 7£6,859 GBP
Retailer 4£8,294 GBP
Retailer 8£8,345 GBP
Brilliant Earth£10,411 GBP
Retailer 6£11,249 GBP
Retailer 13£12,344 GBP
Retailer 9£18,387 GBP
Retailer 5£23,157 GBP

50 data points across 13 retailers

1 retailer

B+
Brilliant Earth
11803590AB · Oct 30
£10,411 GBP
$13,950 USD
View

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B+
4.01ct Marquise
£10,411 GBP