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Marquise|Lab Grown|IGI

3.51ct G SI1 Marquise Lab Grown Diamond

EX • G/SI1 • IGI LG667411682

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG667411682

Diamond specifications and retailer prices

From €939 EUR
$1,049 USD
As of November 1, 2026
1 retailer carries this diamond
Only listing: €939 EUR at B2C Jewels
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 B2C Jewels

About this 3.51ct lab-grown marquise diamond

This 3.51ct lab-grown marquise sits in the three to five carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG667411682 or 667411682. Listed at a single retailer as of November 1, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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

3.51
Carat
G
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG667411682
Dimensions15.73 × 7.87 mm
L/W Ratio2.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
15.73 mm7.87 mm3.51 ctG / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG667411682
Side View
Table 60.0%Crown 34.8°Girdle: STK-THKPavilion 40.5°Culet: NoneDepth 63.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 1
Current: €939 EUR|Low: €903 EUR|High: €1,506 EUR|Avg: €1,126 EUR|-37.7%
September 23, 2026
B2C Jewels€939 EUR

4 data points across 1 retailer

1 retailer

B+
B2C Jewels
28446660 · Nov 1
€939 EUR
$1,049 USD
View

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B+
3.51ct Marquise
€939 EUR