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Cushion|Lab Grown|IGI

1.51ct E SI1 Cushion Lab Grown Diamond

EX • E/SI1 • IGI LG771601186

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG771601186

Diamond specifications and retailer prices

From $342 CAD
As of November 6, 2026
Save $1,080 CAD (76%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $1,422 CAD at MOH London · As of November 5, 2026
View at MOH London

About this 1.51ct lab-grown cushion diamond

This 1.51ct lab-grown cushion sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG771601186 or 771601186. Listed at 9 retailers as of November 5, 2026, with prices from $342 to $1,422, a $1,080 spread on the same certified stone. MOH London lists it at $1,422. 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
E
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.6°
Pavilion angle39°
OriginLab Grown
Grading LabIGI
CertificateIGI LG771601186
Dimensions6.73 × 6.69 × 4.33 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.73 mm6.69 mm1.51 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG771601186
Side View
Table 64.0%Crown 32.6°Girdle: MED-STKPavilion 39°Culet: NoneDepth 64.7%

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: Nov 6
Current: $1,422 CAD|Low: $342 CAD|High: $1,426 CAD|Avg: $679 CAD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 8$342 CAD
Retailer 4$387 CAD
Retailer 2$526 CAD
Retailer 5$539 CAD
Retailer 9$543 CAD
Retailer 10$550 CAD
Retailer 7$627 CAD
Retailer 3$693 CAD
Retailer 6$1,041 CAD
Retailer 11$1,252 CAD
MOH London$1,422 CAD

10 data points across 11 retailers

9 retailers$342 CAD to $1,422 CAD

A
Cheapest Retailer
-
$342 CAD
A
Retailer 2
-
$387 CAD
View
A
Retailer 3
-
$526 CAD
View
A
Retailer 4
-
$539 CAD
View
B+
Retailer 5
-
$543 CAD
View
Retailer 6
-
$550 CAD
View
Price last confirmed 7 days ago
A
Retailer 7
-
$627 CAD
View
B+
Retailer 8
-
$1,041 CAD
View
Most Expensive
B
MOH London
LG771601186 · Nov 5
$1,422 CAD
£796 GBP
View
8 more retailers have this diamond
Prices start from $342 CADSave up to $1,080 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
1.51ct Cushion
$342 CAD