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Marquise|Lab Grown|IGI

1.58ct G SI1 Marquise Lab Grown Diamond

EX • G/SI1 • IGI LG839622196

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG839622196

Diamond specifications and retailer prices

From $302 CAD
$216 USD
As of October 30, 2026
Save $2,073 CAD (87%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $2,375 CAD at Brilliant Earth · As of October 26, 2026
View at Brilliant Earth

About this 1.58ct lab-grown marquise diamond

This 1.58ct lab-grown marquise sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG839622196 or 839622196. Listed at 3 retailers as of October 26, 2026, with prices from $302 to $2,375, a $2,073 spread on the same certified stone. Brilliant Earth lists it at $2,375. 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

1.58
Carat
G
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG839622196
Dimensions12.33 × 6.12 × 3.79 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
12.33 mm6.12 mm1.58 ctG / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG839622196
Side View
Table 59.0%Crown 34.4°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 61.9%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: $2,375 CAD|Low: $302 CAD|High: $2,375 CAD|Avg: $1,297 CAD
Brilliant Earth
Retailer 2
Retailer 3
October 27, 2026
Retailer 2$302 CAD
Retailer 3$632 CAD
Brilliant Earth$2,375 CAD

27 data points across 3 retailers

3 retailers$302 CAD to $2,375 CAD

A
Cheapest Retailer
-
$302 CAD
$216 USD
Final sale: no returns
A
Retailer 2
-
$632 CAD
£356 GBP
View
Most Expensive
B
Brilliant Earth
21552220A · Oct 26
$2,375 CAD
$1,700 USD
View
2 more retailers have this diamond
Prices start from $302 CADSave up to $2,073 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
1.58ct Marquise
$302 CAD