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Marquise|Lab Grown|IGI

1.51ct F SI1 Marquise Lab Grown Diamond

ID • F/SI1 • IGI LG840627168

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG840627168

Diamond specifications and retailer prices

From $492 CAD
$352 USD
As of October 25, 2026
Save $1,130 CAD (70%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $1,622 CAD at MOH London · As of October 26, 2026
View at MOH London

About this 1.51ct lab-grown marquise diamond

This 1.51ct lab-grown marquise sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG840627168 or 840627168. Listed at 4 retailers as of October 25, 2026, with prices from $492 to $1,622, a $1,130 spread on the same certified stone. MOH London lists it at $1,622. 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

1.51
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle39.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840627168
Dimensions12.15 × 6.01 × 3.63 mm
L/W Ratio2.02
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.15 mm6.01 mm1.51 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840627168
Side View
Table 62.0%Crown 35.4°Girdle: MED-STKPavilion 39.1°Culet: NoneDepth 60.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 25
Current: $1,622 CAD|Low: $492 CAD|High: $1,622 CAD|Avg: $1,088 CAD
MOH London
Retailer 2
Retailer 3
Retailer 4
October 30, 2026
Retailer 4$492 CAD
Retailer 3$1,181 CAD
Retailer 2$1,621 CAD
MOH London$1,622 CAD

3 data points across 4 retailers

4 retailers$492 CAD to $1,622 CAD

B+
Cheapest Retailer
-
$492 CAD
$352 USD
B+
Retailer 2
-
$1,181 CAD
$845 USD
View
B
Retailer 3
-
$1,621 CAD
$1,160 USD
View
Most Expensive
B
MOH London
LG840627168 · Oct 26
$1,622 CAD
£914 GBP
View
3 more retailers have this diamond
Prices start from $492 CADSave up to $1,130 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.

B+
1.51ct Marquise
$492 CAD