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Cushion|Lab Grown|IGI

1.09ct E IF Cushion Lab Grown Diamond

ID • E/IF • IGI LG598377011

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG598377011

Diamond specifications and retailer prices

From $444 CAD
$318 USD
As of October 30, 2026
Save $2,336 CAD (84%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $2,780 CAD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.09ct lab-grown cushion diamond

This 1.09ct lab-grown cushion sits in the classic one-carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG598377011 or 598377011. Listed at 17 retailers as of October 29, 2026, with prices from $444 to $2,780, a $2,336 spread on the same certified stone. Brilliant Earth lists it at $2,780. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.09
Carat
E
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.8°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG598377011
Dimensions5.43 × 5.43 × 3.76 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
5.43 mm5.43 mm1.09 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG598377011
Side View
Table 62.0%Crown 33.8°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 69.2%

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: $2,780 CAD|Low: $444 CAD|High: $2,878 CAD|Avg: $1,094 CAD|-3.4%
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
October 30, 2026
Retailer 5$444 CAD
Retailer 4$493 CAD
Retailer 9$524 CAD
Retailer 3$664 CAD
Retailer 12$664 CAD
Retailer 11$846 CAD
Retailer 2$870 CAD
Retailer 7$883 CAD
Retailer 6$935 CAD
Retailer 10$1,199 CAD
Retailer 14$1,225 CAD
Retailer 13$1,916 CAD
Retailer 8$1,985 CAD
Brilliant Earth$2,780 CAD

43 data points across 14 retailers

17 retailers$444 CAD to $2,780 CAD

A
Cheapest Retailer
-
$444 CAD
$318 USD
Final sale: no returns
A
Retailer 2
-
$493 CAD
$353 USD
View
A
Retailer 3
-
$524 CAD
£295 GBP
View
A
Retailer 4
-
$664 CAD
$475 USD
View
A
Retailer 5
-
$664 CAD
$475 USD
View
A
Retailer 6
-
$846 CAD
ZAR 9,788 ZAR
View
A
Retailer 7
-
$870 CAD
£490 GBP
View
A
Retailer 8
-
$883 CAD
€602 EUR
View
A
Retailer 9
-
$935 CAD
$669 USD
View
A
Retailer 10
-
$1,199 CAD
A$1,320 AUD
View
B+
Retailer 11
-
$1,225 CAD
$877 USD
View
B+
Retailer 12
-
$1,654 CAD
$1,184 USD
View
B+
Retailer 13
-
$1,916 CAD
£1,080 GBP
View
B+
Retailer 14
-
$1,985 CAD
£1,119 GBP
View
B
Retailer 15
-
$2,043 CAD
$1,463 USD
View
Retailer 16
-
$2,459 CAD
$1,760 USD
View
Price last confirmed 22 days ago
Most Expensive
B
Brilliant Earth
21311968A · Oct 29
$2,780 CAD
$1,990 USD
View
16 more retailers have this diamond
Prices start from $444 CADSave up to $2,336 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
1.09ct Cushion
$444 CAD