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Cushion|Lab Grown|IGI

1.51ct E IF Cushion Lab Grown Diamond

ID • E/IF • IGI LG626419440

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG626419440

Diamond specifications and retailer prices

From $684 CAD
$490 USD
As of October 30, 2026
Save $2,696 CAD (80%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $3,380 CAD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

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 IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG626419440 or 626419440. Listed at 8 retailers as of October 30, 2026, with prices from $684 to $3,380, a $2,696 spread on the same certified stone. Brilliant Earth lists it at $3,380. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
E
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG626419440
Dimensions6.66 × 6.64 × 4.48 mm
L/W Ratio1.00
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
6.66 mm6.64 mm1.51 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG626419440
Side View
Table 60.0%Crown 36.1°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 67.5%

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: Oct 30
Current: $3,380 CAD|Low: $684 CAD|High: $7,073 CAD|Avg: $2,128 CAD|-18.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 30, 2026
Retailer 6$684 CAD
Retailer 8$1,019 CAD
Retailer 4$1,020 CAD
Retailer 7$1,168 CAD
Retailer 2$2,147 CAD
Retailer 5$2,941 CAD
Retailer 3$3,045 CAD
Brilliant Earth$3,380 CAD

12 data points across 8 retailers

8 retailers$684 CAD to $3,380 CAD

A
Cheapest Retailer
-
$684 CAD
$490 USD
Final sale: no returns
A
Retailer 2
-
$1,019 CAD
HK$5,700 HKD
View
A
Retailer 3
-
$1,020 CAD
$730 USD
View
A
Retailer 4
-
$1,168 CAD
$836 USD
View
Retailer 5
-
$2,147 CAD
A$2,365 AUD
View
B+
Retailer 6
-
$2,941 CAD
SGD 2,845 SGD
View
Retailer 7
-
$3,045 CAD
$2,180 USD
View
Price last confirmed 9 days ago
Most Expensive
B
Brilliant Earth
15233891Y · Oct 30
$3,380 CAD
$2,420 USD
View
7 more retailers have this diamond
Prices start from $684 CADSave up to $2,696 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
$684 CAD