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Marquise|Lab Grown|IGI

3.10ct E SI1 Marquise Lab Grown Diamond

EX • E/SI1 • IGI LG843676193

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG843676193

Diamond specifications and retailer prices

From $537 CAD
$384 USD
As of October 29, 2026
Save $4,053 CAD (88%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $4,591 CAD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 3.1ct lab-grown marquise diamond

This 3.1ct lab-grown marquise sits in the three to five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG843676193 or 843676193. Listed at 3 retailers as of October 29, 2026, with prices from $537 to $4,591, a $4,053 spread on the same certified stone. Brilliant Earth lists it at $4,591. 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

3.10
Carat
E
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG843676193
Dimensions15.17 × 7.71 × 4.71 mm
L/W Ratio1.97
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
15.17 mm7.71 mm3.10 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG843676193
Side View
Table 61.0%Crown 35.2°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 61.1%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $4,591 CAD|Low: $537 CAD|High: $6,550 CAD|Avg: $2,979 CAD|-29.9%
Brilliant Earth
Retailer 2
Retailer 3
October 30, 2026
Retailer 3$537 CAD
Retailer 2$1,109 CAD
Brilliant Earth$4,591 CAD

18 data points across 3 retailers

3 retailers$537 CAD to $4,591 CAD

A
Cheapest Retailer
-
$537 CAD
$384 USD
Final sale: no returns
A
Retailer 2
-
$1,109 CAD
£624 GBP
View
Most Expensive
B
Brilliant Earth
21815858A · Oct 30
$4,591 CAD
$3,280 USD
View
2 more retailers have this diamond
Prices start from $537 CADSave up to $4,053 CAD

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
3.10ct Marquise
$537 CAD