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Marquise|Lab Grown|IGI

1.39ct E SI1 Marquise Lab Grown Diamond

EX • E/SI1 • IGI LG844653474

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG844653474

Diamond specifications and retailer prices

From €187 EUR
As of November 4, 2026
Save €731 EUR (80%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: €918 EUR at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1.39ct lab-grown marquise diamond

This 1.39ct lab-grown marquise sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG844653474 or 844653474. Listed at 3 retailers as of November 4, 2026, with prices from €187 to €918, a €731 spread on the same certified stone. Brilliant Earth lists it at €918. 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

1.39
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG844653474
Dimensions11.62 × 5.87 × 3.64 mm
L/W Ratio1.98
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.62 mm5.87 mm1.39 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG844653474
Side View
Table 60.0%Crown 34.2°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.0%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: €918 EUR|Low: €183 EUR|High: €1,310 EUR|Avg: €619 EUR|-29.9%
Brilliant Earth
Retailer 2
Retailer 3
November 6, 2026
Retailer 3€187 EUR
Retailer 2€384 EUR
Brilliant Earth€918 EUR

24 data points across 3 retailers

3 retailers€187 EUR to €918 EUR

A
Cheapest Retailer
-
€187 EUR
Final sale: no returns
A
Retailer 2
-
€384 EUR
View
Most Expensive
B
Brilliant Earth
21829865A · Nov 4
€918 EUR
$1,030 USD
View
2 more retailers have this diamond
Prices start from €187 EURSave up to €731 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
1.39ct Marquise
€187 EUR