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Marquise|Lab Grown|IGI

3.16ct E SI1 Marquise Lab Grown Diamond

ID • E/SI1 • IGI LG846637158

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG846637158

Diamond specifications and retailer prices

From $546 CAD
$390 USD
As of October 29, 2026
Save $6,130 CAD (92%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $6,676 CAD at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 3.16ct lab-grown marquise diamond

This 3.16ct 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 LG846637158 or 846637158. Listed at 3 retailers as of October 28, 2026, with prices from $546 to $6,676, a $6,130 spread on the same certified stone. Brilliant Earth lists it at $6,676. 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

3.16
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG846637158
Dimensions15.34 × 7.65 × 4.76 mm
L/W Ratio2.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
15.34 mm7.65 mm3.16 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG846637158
Side View
Table 61.0%Crown 34.2°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 62.2%

Caratlytics Score

How it works →
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: $6,676 CAD|Low: $546 CAD|High: $6,676 CAD|Avg: $3,484 CAD
Brilliant Earth
Retailer 2
Retailer 3
October 30, 2026
Retailer 3$546 CAD
Retailer 2$1,127 CAD
Brilliant Earth$6,676 CAD

11 data points across 3 retailers

3 retailers$546 CAD to $6,676 CAD

A
Cheapest Retailer
-
$546 CAD
$390 USD
Final sale: no returns
A
Retailer 2
-
$1,127 CAD
£634 GBP
View
Most Expensive
B
Brilliant Earth
22211938A · Oct 28
$6,676 CAD
$4,770 USD
View
2 more retailers have this diamond
Prices start from $546 CADSave up to $6,130 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
3.16ct Marquise
$546 CAD