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Marquise|Lab Grown|IGI

4.02ct E IF Marquise Lab Grown Diamond

EX • E/IF • IGI LG631468299

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG631468299

Diamond specifications and retailer prices

From £14,539 GBP
$19,480 USD
As of October 30, 2026
2 retailers carry this diamond
Only listing: £14,539 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 4.02ct lab-grown marquise diamond

This 4.02ct 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 LG631468299 or 631468299. Listed at 2 retailers as of October 30, 2026. 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

4.02
Carat
E
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG631468299
Dimensions15.91 × 8.39 × 5.26 mm
L/W Ratio1.90
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
15.91 mm8.39 mm4.02 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG631468299
Side View
Table 61.0%Crown 35.2°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 62.7%

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: £11,158 GBP|Low: £7,122 GBP|High: £552,269 GBP|Avg: £43,095 GBP|-38.5%
Brilliant Earth
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September 4, 2026
Retailer 10£7,122 GBP
Retailer 2£9,819 GBP
Retailer 14£10,002 GBP
Brilliant Earth£11,158 GBP
Retailer 11£13,167 GBP
Retailer 4£15,155 GBP
Retailer 13£16,890 GBP
Retailer 8£17,596 GBP
Retailer 6£25,512 GBP
Retailer 7£27,505 GBP
Retailer 3£30,848 GBP
Retailer 12£35,189 GBP
Retailer 5£52,422 GBP
Retailer 9£54,048 GBP

59 data points across 14 retailers

2 retailers

B+
Brilliant Earth
18396742Y · Oct 30
£14,539 GBP
$19,480 USD
View

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B+
4.02ct Marquise
£14,539 GBP