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Cushion|Lab Grown|IGI

1.57ct I SI1 Cushion Lab Grown Diamond

ID • I/SI1 • IGI LG587320952

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG587320952

Diamond specifications and retailer prices

From $451 CAD
$322 USD
As of October 28, 2026
Save $1,453 CAD (76%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $1,903 CAD at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 1.57ct lab-grown cushion diamond

This 1.57ct lab-grown cushion sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG587320952 or 587320952. Listed at 5 retailers as of October 28, 2026, with prices from $451 to $1,903, a $1,453 spread on the same certified stone. Brilliant Earth lists it at $1,903. 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

1.57
Carat
I
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.2°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG587320952
Dimensions6.79 × 6.73 × 4.56 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
6.79 mm6.73 mm1.57 ctI / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG587320952
Side View
Table 60.0%Crown 36.2°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 67.8%

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 28
Current: $1,903 CAD|Low: $444 CAD|High: $2,127 CAD|Avg: $1,340 CAD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 25, 2026
Retailer 4$451 CAD
Retailer 5$930 CAD
Retailer 2$1,248 CAD
Retailer 3$1,875 CAD
Brilliant Earth$1,903 CAD

8 data points across 5 retailers

5 retailers$451 CAD to $1,903 CAD

B+
Cheapest Retailer
-
$451 CAD
$322 USD
A
Retailer 2
-
$930 CAD
$664 USD
View
A
Retailer 3
-
$1,248 CAD
£702 GBP
View
B+
Retailer 4
-
$1,875 CAD
$1,340 USD
View
Most Expensive
B
Brilliant Earth
7711300Y · Oct 28
$1,903 CAD
$1,360 USD
View
4 more retailers have this diamond
Prices start from $451 CADSave up to $1,453 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
1.57ct Cushion
$451 CAD