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Cushion|Lab Grown|IGI

1.51ct E IF Cushion Lab Grown Diamond

ID • E/IF • IGI LG770641066

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG770641066

Diamond specifications and retailer prices

From $627 CAD
$449 USD
As of October 30, 2026
Save $2,781 CAD (82%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $3,408 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 LG770641066 or 770641066. Listed at 19 retailers as of October 30, 2026, with prices from $627 to $3,408, a $2,781 spread on the same certified stone. Brilliant Earth lists it at $3,408. 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
SymmetryVery Good
FluorescenceNone
Crown angle38.6°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG770641066
Dimensions7.11 × 6.87 × 4.30 mm
L/W Ratio1.03
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.11 mm6.87 mm1.51 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG770641066
Side View
Table 56.0%Crown 38.6°Girdle: MED-STKPavilion 39.5°Culet: NoneDepth 62.6%

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 30
Current: $3,408 CAD|Low: $577 CAD|High: $4,861 CAD|Avg: $1,729 CAD|-29.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
October 30, 2026
Retailer 2$627 CAD
Retailer 4$647 CAD
Retailer 10$668 CAD
Retailer 15$803 CAD
Retailer 3$1,000 CAD
Retailer 6$1,032 CAD
Retailer 14$1,111 CAD
Retailer 11$1,168 CAD
Retailer 12$1,188 CAD
Retailer 17$1,456 CAD
Retailer 5$1,620 CAD
Retailer 8$2,133 CAD
Retailer 9$2,366 CAD
Retailer 7$2,440 CAD
Retailer 13$2,540 CAD
Retailer 16$3,276 CAD
Brilliant Earth$3,408 CAD

34 data points across 17 retailers

19 retailers$627 CAD to $3,408 CAD

A
Cheapest Retailer
-
$627 CAD
$449 USD
Final sale: no returns
A
Retailer 2
-
$647 CAD
$463 USD
View
A
Retailer 3
-
$668 CAD
£376 GBP
View
A
Retailer 4
-
$803 CAD
$575 USD
View
A
Retailer 5
-
$1,000 CAD
$716 USD
View
A
Retailer 6
-
$1,032 CAD
$739 USD
View
A
Retailer 7
-
$1,111 CAD
ZAR 12,852 ZAR
View
A
Retailer 8
-
$1,168 CAD
£659 GBP
View
A
Retailer 9
-
$1,188 CAD
€810 EUR
View
A
Retailer 10
-
$1,456 CAD
$1,042 USD
View
A
Retailer 11
-
$1,620 CAD
$1,160 USD
View
B+
Retailer 12
-
$2,133 CAD
$1,527 USD
View
B+
Retailer 13
-
$2,179 CAD
$1,560 USD
View
B+
Retailer 14
-
$2,366 CAD
$1,694 USD
View
B+
Retailer 15
-
$2,421 CAD
$1,733 USD
View
B+
Retailer 16
-
$2,440 CAD
$1,747 USD
View
B+
Retailer 17
-
$2,540 CAD
£1,432 GBP
View
Retailer 18
-
$3,276 CAD
$2,345 USD
View
Price last confirmed 9 days ago
Most Expensive
B
Brilliant Earth
20258573A · Oct 30
$3,408 CAD
$2,440 USD
View
18 more retailers have this diamond
Prices start from $627 CADSave up to $2,781 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
$627 CAD