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Marquise|Lab Grown|IGI

2.55ct E SI1 Marquise Lab Grown Diamond

EX • E/SI1 • IGI LG843664546

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG843664546

Diamond specifications and retailer prices

From €587 EUR
£517 GBP
As of October 27, 2026
Save €2,769 EUR (83%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: €3,357 EUR at Brilliant Earth · As of October 26, 2026
View at Brilliant Earth

About this 2.55ct lab-grown marquise diamond

This 2.55ct lab-grown marquise sits in the two to three carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG843664546 or 843664546. Listed at 2 retailers as of October 26, 2026, with prices from €587 to €3,357, a €2,769 spread on the same certified stone. Brilliant Earth lists it at €3,357. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

2.55
Carat
E
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG843664546
Dimensions14.37 × 6.98 × 4.52 mm
L/W Ratio2.06
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
14.37 mm6.98 mm2.55 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG843664546
Side View
Table 58.0%Crown 34.9°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 64.8%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 27
Current: €3,357 EUR|Low: €280 EUR|High: €3,357 EUR|Avg: €1,629 EUR
Brilliant Earth
Retailer 2
Retailer 3
October 27, 2026
Retailer 3€280 EUR
Retailer 2€587 EUR
Brilliant Earth€3,357 EUR

10 data points across 3 retailers

2 retailers€587 EUR to €3,357 EUR

A
Cheapest Retailer
-
€587 EUR
£517 GBP
Most Expensive
B
Brilliant Earth
21759889A · Oct 26
€3,357 EUR
$3,750 USD
View
1 more retailer has this diamond
Prices start from €587 EURSave up to €2,769 EUR

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
2.55ct Marquise
€587 EUR