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Cushion|Lab Grown|IGI

1.77ct D IF Cushion Lab Grown Diamond

EX • D/IF • IGI LG731533573

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG731533573

Diamond specifications and retailer prices

From $599 CAD
$428 USD
As of October 30, 2026
Save $4,649 CAD (89%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $5,249 CAD at Brilliant Earth · As of October 24, 2026
View at Brilliant Earth

About this 1.77ct lab-grown cushion diamond

This 1.77ct lab-grown cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG731533573 or 731533573. Listed at 22 retailers as of October 24, 2026, with prices from $599 to $5,249, a $4,649 spread on the same certified stone. Brilliant Earth lists it at $5,249. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.77
Carat
D
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle29.8°
Pavilion angle39.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG731533573
Dimensions8.25 × 6.61 × 4.38 mm
L/W Ratio1.25
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
8.25 mm6.61 mm1.77 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG731533573
Side View
Table 60.0%Crown 29.8°Girdle: MED-STKPavilion 39.6°Culet: NoneDepth 66.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $4,647 CAD|Low: $599 CAD|High: $5,416 CAD|Avg: $2,123 CAD|-11.5%
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
Retailer 18
Retailer 19
October 30, 2026
Retailer 6$599 CAD
Retailer 12$780 CAD
Retailer 5$914 CAD
Retailer 17$1,008 CAD
Retailer 18$1,023 CAD
Retailer 2$1,059 CAD
Retailer 13$1,212 CAD
Retailer 16$1,263 CAD
Retailer 15$1,340 CAD
Retailer 4$1,502 CAD
Retailer 14$1,712 CAD
Retailer 10$2,154 CAD
Retailer 11$2,410 CAD
Retailer 7$2,480 CAD
Retailer 3$2,493 CAD
Retailer 9$2,714 CAD
Retailer 8$4,024 CAD
Brilliant Earth$4,647 CAD
Retailer 19$4,773 CAD

28 data points across 19 retailers

22 retailers$599 CAD to $5,249 CAD

A
Cheapest Retailer
-
$599 CAD
$428 USD
Final sale: no returns
A
Retailer 2
-
$780 CAD
£439 GBP
View
A
Retailer 3
-
$914 CAD
HK$5,100 HKD
View
A
Retailer 4
-
$1,008 CAD
$720 USD
View
A
Retailer 5
-
$1,023 CAD
$731 USD
View
A
Retailer 6
-
$1,059 CAD
$757 USD
View
A
Retailer 7
-
$1,212 CAD
£682 GBP
View
A
Retailer 8
-
$1,263 CAD
ZAR 14,581 ZAR
View
A
Retailer 9
-
$1,340 CAD
€912 EUR
View
A
Retailer 10
-
$1,502 CAD
$1,073 USD
View
A
Retailer 11
-
$1,712 CAD
A$1,882 AUD
View
Retailer 12
-
$2,154 CAD
£1,212 GBP
View
Price last confirmed 8 days ago
B+
Retailer 13
-
$2,410 CAD
$1,722 USD
View
B+
Retailer 14
-
$2,480 CAD
$1,772 USD
View
B+
Retailer 15
-
$2,493 CAD
$1,781 USD
View
Retailer 16
-
$2,714 CAD
£1,527 GBP
View
Price last confirmed 9 days ago
Retailer 17
-
$3,842 CAD
$2,745 USD
View
Price last confirmed 25 days ago
Retailer 18
-
$4,024 CAD
$2,875 USD
View
Price last confirmed 9 days ago
B
Retailer 19
-
$4,479 CAD
£2,520 GBP
View
B
Retailer 20
-
$4,647 CAD
$3,320 USD
View
B
Retailer 21
-
$4,773 CAD
$3,410 USD
View
Most Expensive
B
Brilliant Earth
15616671A · Oct 24
$5,249 CAD
$3,750 USD
View
21 more retailers have this diamond
Prices start from $599 CADSave up to $4,649 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
1.77ct Cushion
$599 CAD