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Cushion|Lab Grown|IGI

1.51ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG529246828

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG529246828

Diamond specifications and retailer prices

From $356 CAD
As of November 6, 2026
Save $1,441 CAD (80%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $1,797 CAD at Reve Diamonds · As of November 6, 2026
View at Reve Diamonds

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 LG529246828 or 529246828. Listed at 12 retailers as of November 6, 2026, with prices from $356 to $1,797, a $1,441 spread on the same certified stone. Reve Diamonds lists it at $1,797. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.6°
Pavilion angle35.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG529246828
Dimensions6.73 × 6.47 × 4.22 mm
L/W Ratio1.04
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
6.73 mm6.47 mm1.51 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG529246828
Side View
Table 56.5%Crown 36.6°Girdle: MED-THKPavilion 35.8°Culet: NoneDepth 65.2%

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: $632 CAD|Low: $356 CAD|High: $1,797 CAD|Avg: $907 CAD|+10.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Reve Diamonds
November 6, 2026
Retailer 2$356 CAD
Retailer 3$395 CAD
Retailer 4$502 CAD
Retailer 9$532 CAD
Retailer 1$632 CAD
Retailer 11$651 CAD
Retailer 5$729 CAD
Retailer 8$750 CAD
Retailer 10$1,342 CAD
Retailer 7$1,350 CAD
Retailer 6$1,577 CAD
Reve Diamonds$1,797 CAD

40 data points across 12 retailers

12 retailers$356 CAD to $1,797 CAD

A
Cheapest Retailer
-
$356 CAD
Final sale: no returns
Retailer 2
-
$395 CAD
View
Price last confirmed 12 days ago
A
Retailer 3
-
$502 CAD
View
B+
Retailer 4
-
$532 CAD
View
A
Retailer 5
-
$632 CAD
View
A
Retailer 6
-
$651 CAD
View
B+
Retailer 7
-
$729 CAD
View
B+
Retailer 8
-
$750 CAD
View
B
Retailer 9
-
$1,342 CAD
View
B+
Retailer 10
-
$1,350 CAD
View
B
Retailer 11
-
$1,577 CAD
View
Most Expensive
B
Reve Diamonds
DC166055E · Nov 6
$1,797 CAD
$1,278 USD
View
11 more retailers have this diamond
Prices start from $356 CADSave up to $1,441 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
$356 CAD