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Cushion|Lab Grown|IGI

1.66ct E IF Cushion Lab Grown Diamond

ID • E/IF • IGI LG729569332

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG729569332

Diamond specifications and retailer prices

From $983 CAD
$704 USD
As of November 1, 2026
Save $3,612 CAD (79%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $4,596 CAD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.66ct lab-grown cushion diamond

This 1.66ct 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 LG729569332 or 729569332. Listed at 20 retailers as of October 31, 2026, with prices from $983 to $4,596, a $3,612 spread on the same certified stone. Brilliant Earth lists it at $4,596. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.66
Carat
E
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG729569332
Dimensions7.93 × 6.21 × 4.31 mm
L/W Ratio1.28
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
7.93 mm6.21 mm1.66 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG729569332
Side View
Table 58.0%Crown 35.8°Girdle: MED-VTKPavilion 40°Culet: NoneDepth 69.4%

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: Nov 1
Current: $4,596 CAD|Low: $983 CAD|High: $4,694 CAD|Avg: $2,359 CAD|-2.1%
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
November 1, 2026
Retailer 11$983 CAD
Retailer 4$1,021 CAD
Retailer 16$1,257 CAD
Retailer 7$1,372 CAD
Retailer 8$1,464 CAD
Retailer 10$1,657 CAD
Retailer 9$1,696 CAD
Retailer 14$1,875 CAD
Retailer 12$2,322 CAD
Retailer 13$2,541 CAD
Retailer 15$2,647 CAD
Retailer 6$3,172 CAD
Retailer 3$3,290 CAD
Retailer 5$3,444 CAD
Retailer 2$4,300 CAD
Brilliant Earth$4,596 CAD

44 data points across 16 retailers

20 retailers$983 CAD to $4,596 CAD

A
Cheapest Retailer
-
$983 CAD
$704 USD
Final sale: no returns
Retailer 2
-
$1,021 CAD
$731 USD
View
Price last confirmed 16 days ago
A
Retailer 3
-
$1,198 CAD
HK$6,700 HKD
View
A
Retailer 4
-
$1,257 CAD
$900 USD
View
A
Retailer 5
-
$1,372 CAD
$982 USD
View
A
Retailer 6
-
$1,464 CAD
$1,048 USD
View
A
Retailer 7
-
$1,657 CAD
€1,130 EUR
View
A
Retailer 8
-
$1,696 CAD
£956 GBP
View
A
Retailer 9
-
$1,840 CAD
$1,317 USD
View
A
Retailer 10
-
$1,875 CAD
ZAR 21,689 ZAR
View
B+
Retailer 11
-
$2,322 CAD
$1,662 USD
View
B+
Retailer 12
-
$2,541 CAD
A$2,799 AUD
View
Retailer 13
-
$2,647 CAD
$1,895 USD
View
Price last confirmed 11 days ago
B+
Retailer 14
-
$3,172 CAD
£1,788 GBP
View
B+
Retailer 15
-
$3,290 CAD
$2,355 USD
View
B+
Retailer 16
-
$3,444 CAD
SGD 3,332 SGD
View
B
Retailer 17
-
$3,523 CAD
$2,522 USD
View
B
Retailer 18
-
$3,584 CAD
$2,566 USD
View
B
Retailer 19
-
$4,300 CAD
£2,424 GBP
View
Most Expensive
B
Brilliant Earth
15964172A · Oct 31
$4,596 CAD
$3,290 USD
View
19 more retailers have this diamond
Prices start from $983 CADSave up to $3,612 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
1.66ct Cushion
$983 CAD