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Cushion|Lab Grown|IGI

1.50ct F SI1 Cushion Lab Grown Diamond

ID • F/SI1 • IGI LG522251870

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG522251870

Diamond specifications and retailer prices

From $290 CAD
As of November 5, 2026
Save $1,320 CAD (82%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $1,610 CAD at Reve Diamonds · As of November 6, 2026
View at Reve Diamonds

About this 1.5ct lab-grown cushion diamond

This 1.5ct lab-grown cushion 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 LG522251870 or 522251870. Listed at 13 retailers as of November 5, 2026, with prices from $290 to $1,610, a $1,320 spread on the same certified stone. Reve Diamonds lists it at $1,610. 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

1.50
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.6°
Pavilion angle33.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG522251870
Dimensions6.62 × 6.47 × 4.11 mm
L/W Ratio1.02
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.62 mm6.47 mm1.50 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG522251870
Side View
Table 64.5%Crown 36.6°Girdle: MED-VTKPavilion 33.6°Culet: NoneDepth 63.5%

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 5
Current: $547 CAD|Low: $286 CAD|High: $1,610 CAD|Avg: $743 CAD|+4.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Reve Diamonds
November 6, 2026
Retailer 8$290 CAD
Retailer 12$316 CAD
Retailer 2$447 CAD
Retailer 1$547 CAD
Retailer 6$574 CAD
Retailer 5$636 CAD
Retailer 4$661 CAD
Retailer 3$786 CAD
Retailer 11$791 CAD
Retailer 10$1,110 CAD
Retailer 7$1,294 CAD
Retailer 9$1,499 CAD
Reve Diamonds$1,610 CAD

36 data points across 13 retailers

13 retailers$290 CAD to $1,610 CAD

A
Cheapest Retailer
-
$290 CAD
Final sale: no returns
Retailer 2
-
$316 CAD
View
Price last confirmed 26 days ago
B+
Retailer 3
-
$447 CAD
View
A
Retailer 4
-
$547 CAD
View
A
Retailer 5
-
$574 CAD
View
A
Retailer 6
-
$636 CAD
View
A
Retailer 7
-
$661 CAD
View
A
Retailer 8
-
$786 CAD
View
A
Retailer 9
-
$791 CAD
View
B+
Retailer 10
-
$1,110 CAD
View
B
Retailer 11
-
$1,294 CAD
View
B
Retailer 12
-
$1,499 CAD
View
Most Expensive
B
Reve Diamonds
1116C6968 · Nov 6
$1,610 CAD
$1,144 USD
View
12 more retailers have this diamond
Prices start from $290 CADSave up to $1,320 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
1.50ct Cushion
$290 CAD